SlideShare a Scribd company logo
1 of 1
Does Sanders-Retzlaff-Kraff (SRK-2) formula suit a Sri Lankan
                             population in phacoemulsification cataract surgery
                                                         of medium axial length?
     MS                  MS Amaratunge , J De Silva1, IM Wasthuhewaarachchi , SH Uyangoda , MAJI Mallawaarachchi , R
                                           1                                         2                    1                     1

Premarathna3, AAN Nishad4
                                          Vijaya Kumaratunge Memorial Hospital, Seeduwa Teaching Hospital, Vavuniya
                                          1                                                           2

                  3
                    Faculty of Medicine, University of Kelaniya 4Post Graduate Institute of Medicine, University of Colombo

                                                                                            Results
                                                            ๏ถ274 patients, mean (S.D.) age was 65.3(10) years.
                                                            ๏ถ56% were females.
 Introduction                                               ๏ถ90(32.8%) had diabetes mellitus and 107(39%) had
 Intraocular lens (IOL) power calculation formulas          hypertension.
 have evolved over the past 25 years. The most              ๏ถThe right eye was operated in 142 (51.8%) patients and the
 recent formulas (third and fourth generation) are the      left eye in 132 (48.2%).
 most useful and precise                                             Table 1. Visual acuity 7 days post operatively
 Prediction accuracy depends on three factors:                           Visual acuity                        Percentage
 #accuracy of the biometric data (axial length and                           6/6                                 79%
 keratometry readings),
 #accuracy of manufactured IOL power quality                                 > 6/9                              93%
 control #accuracy of the IOL power formulas                            > 6/12 to 6/36                          97%

 Introduction of phacoemulsification with small               ๏ถMean (S.D.) IOL power used was 21.50D (1.90D), (range; 10.0D to
 incision techniques, minimizing cylindrical error, and       25.5D).
 continuous curvilinear capsulorhexis technique, that         ๏ถThe mean predicted refractive error with SRK-2 was -0.300 ยฑ 0.145 D
 allows better IOL capsular fixation and more                 (range, -0.05D to -0.7D).
 predictable ELP                                              ๏ถThe mean achieved refractive error was -0.220 ยฑ 0.732 D (range,
                                                              +1.00 to -1.5 D).
                                                              ๏ถThe difference between predicted and achieved refractive error
 The correct IOL power became a crucial step for
                                                              presented a slight hyperopic shift (mean ยฑ SD: 0.054 ยฑ 0.397 D),
 good refractive outcome in the preoperative
 examination of cataract surgery.                             ๏ถ
                                                                  ranging from -1.31 D to + 1.19 D.
                                                                 Graph 1. Correlation between Targeted refraction and
                                                               Refraction Targeted with SRK 2 (Pearson Correlation=0.126
                                                                                       (p=0.038)

                    Objectives
  To evaluate the predictive accuracy of post operative
refraction using SRK-2 formula in phacoemulsification in
            eyes with 22-26mm axial length.




                     Methods
 ๏ถSenile cataract patients who underwent
 phacoemulsification and IOL between January to
 December 2010 in Gampaha district by a single                                              Conclusion
 surgeon.                                                      SRK-2 formula as a good option to predict the refractive error
 ๏ถEyes with 22-26mm axial length.                              after cataract extraction by phacoemulsification in eyes with
 ๏ถSingle examiner measured simulated manual                    medium axial length.
 keratometry preoperatively and seven days
 postoperatively; uncorrected visual acuity, slit lamp         Unique in reporting eyes implanted in the capsular bag by the
 examination of the anterior segment and best                  same surgeon, with preoperative measurements obtained from
 spectacle-corrected visual acuity (BSCVA) were taken.         the same instrumentation by the same method and same
 ๏ถThe implanted IOL power was used to calculate                technician, using SRK-2 formula for IOL power calculation in eyes
 predicted postoperative refractive error by SRK-2             with medium axial length that underwent phacoemulsification
 formula.                                                      with foldable IOL implantation.



Sri Lanka Medical Association , 125th Anniversary International Medical Congress, Colombo, Sri Lanka

More Related Content

What's hot

320ยบ Six Month Follow up
320ยบ Six Month Follow up320ยบ Six Month Follow up
320ยบ Six Month Follow upFerrara Ophthalmics
ย 
Segmentos de Anel de Ferrara com arco de 140ยบ
Segmentos de Anel de Ferrara com arco de 140ยบSegmentos de Anel de Ferrara com arco de 140ยบ
Segmentos de Anel de Ferrara com arco de 140ยบFerrara Ophthalmics
ย 
Diagnosis of Diabetic Retinopathy by Detection of Microneurysm And Exudates
Diagnosis of Diabetic Retinopathy by Detection of Microneurysm And ExudatesDiagnosis of Diabetic Retinopathy by Detection of Microneurysm And Exudates
Diagnosis of Diabetic Retinopathy by Detection of Microneurysm And ExudatesIRJET Journal
ย 
AN EXPLORATION OF PERIOCULAR REGION WITH REDUCED REGION FOR AUTHENTICATION : ...
AN EXPLORATION OF PERIOCULAR REGION WITH REDUCED REGION FOR AUTHENTICATION : ...AN EXPLORATION OF PERIOCULAR REGION WITH REDUCED REGION FOR AUTHENTICATION : ...
AN EXPLORATION OF PERIOCULAR REGION WITH REDUCED REGION FOR AUTHENTICATION : ...cscpconf
ย 
An exploration of periocular region with reduced region for authentication re...
An exploration of periocular region with reduced region for authentication re...An exploration of periocular region with reduced region for authentication re...
An exploration of periocular region with reduced region for authentication re...csandit
ย 
SUPERPIXEL CLASSIFICATION BASED OPTIC DISC AND OPTIC CUP SEGMENTATION FOR GLA...
SUPERPIXEL CLASSIFICATION BASED OPTIC DISC AND OPTIC CUP SEGMENTATION FOR GLA...SUPERPIXEL CLASSIFICATION BASED OPTIC DISC AND OPTIC CUP SEGMENTATION FOR GLA...
SUPERPIXEL CLASSIFICATION BASED OPTIC DISC AND OPTIC CUP SEGMENTATION FOR GLA...pharmaindexing
ย 
IRJET -Analysis of Ophthalmic System Applications using Signal Processing
IRJET -Analysis of Ophthalmic System Applications using Signal ProcessingIRJET -Analysis of Ophthalmic System Applications using Signal Processing
IRJET -Analysis of Ophthalmic System Applications using Signal ProcessingIRJET Journal
ย 
IRJET- Approach for Diabetic Retinopathy Analysis using Artificial Neural Net...
IRJET- Approach for Diabetic Retinopathy Analysis using Artificial Neural Net...IRJET- Approach for Diabetic Retinopathy Analysis using Artificial Neural Net...
IRJET- Approach for Diabetic Retinopathy Analysis using Artificial Neural Net...IRJET Journal
ย 
H0366051058
H0366051058H0366051058
H0366051058theijes
ย 
Ospe eye for post graduate ophthalmic student such as FCPS. FRCOphth
Ospe eye for post graduate ophthalmic student such as FCPS. FRCOphthOspe eye for post graduate ophthalmic student such as FCPS. FRCOphth
Ospe eye for post graduate ophthalmic student such as FCPS. FRCOphthAnisur Rahman
ย 
12 correlation of anterior segment parameters
12 correlation of anterior segment parameters12 correlation of anterior segment parameters
12 correlation of anterior segment parametersFerrara Ophthalmics
ย 
Lenstar 900 'Improving Outcomes' Brochure
Lenstar 900 'Improving Outcomes' BrochureLenstar 900 'Improving Outcomes' Brochure
Lenstar 900 'Improving Outcomes' BrochureHaag-Streit UK (HS-UK)
ย 
Iol power calculation normal and post lasik eyes
Iol power calculation normal and post lasik eyesIol power calculation normal and post lasik eyes
Iol power calculation normal and post lasik eyesDINESH and SONALEE
ย 
Opthelmology services & treatments
Opthelmology services & treatmentsOpthelmology services & treatments
Opthelmology services & treatmentsSuyash_MedicityKharghar
ย 
A Comparative Study of Age Related Macular Degeneration In Relation To SD-OCT...
A Comparative Study of Age Related Macular Degeneration In Relation To SD-OCT...A Comparative Study of Age Related Macular Degeneration In Relation To SD-OCT...
A Comparative Study of Age Related Macular Degeneration In Relation To SD-OCT...iosrjce
ย 
Master thesis - Long Bone Segmentation and Fracture Detection in X-ray Images
Master thesis - Long Bone Segmentation and Fracture Detection in X-ray ImagesMaster thesis - Long Bone Segmentation and Fracture Detection in X-ray Images
Master thesis - Long Bone Segmentation and Fracture Detection in X-ray Imagesherodias
ย 
Effect of the Human Eye Cornea Material Property on Measurement of the Intrao...
Effect of the Human Eye Cornea Material Property on Measurement of the Intrao...Effect of the Human Eye Cornea Material Property on Measurement of the Intrao...
Effect of the Human Eye Cornea Material Property on Measurement of the Intrao...IDES Editor
ย 

What's hot (20)

320ยบ Six Month Follow up
320ยบ Six Month Follow up320ยบ Six Month Follow up
320ยบ Six Month Follow up
ย 
Segmentos de Anel de Ferrara com arco de 140ยบ
Segmentos de Anel de Ferrara com arco de 140ยบSegmentos de Anel de Ferrara com arco de 140ยบ
Segmentos de Anel de Ferrara com arco de 140ยบ
ย 
12 large case series
12 large case series12 large case series
12 large case series
ย 
C01230912
C01230912C01230912
C01230912
ย 
Diagnosis of Diabetic Retinopathy by Detection of Microneurysm And Exudates
Diagnosis of Diabetic Retinopathy by Detection of Microneurysm And ExudatesDiagnosis of Diabetic Retinopathy by Detection of Microneurysm And Exudates
Diagnosis of Diabetic Retinopathy by Detection of Microneurysm And Exudates
ย 
AN EXPLORATION OF PERIOCULAR REGION WITH REDUCED REGION FOR AUTHENTICATION : ...
AN EXPLORATION OF PERIOCULAR REGION WITH REDUCED REGION FOR AUTHENTICATION : ...AN EXPLORATION OF PERIOCULAR REGION WITH REDUCED REGION FOR AUTHENTICATION : ...
AN EXPLORATION OF PERIOCULAR REGION WITH REDUCED REGION FOR AUTHENTICATION : ...
ย 
An exploration of periocular region with reduced region for authentication re...
An exploration of periocular region with reduced region for authentication re...An exploration of periocular region with reduced region for authentication re...
An exploration of periocular region with reduced region for authentication re...
ย 
SUPERPIXEL CLASSIFICATION BASED OPTIC DISC AND OPTIC CUP SEGMENTATION FOR GLA...
SUPERPIXEL CLASSIFICATION BASED OPTIC DISC AND OPTIC CUP SEGMENTATION FOR GLA...SUPERPIXEL CLASSIFICATION BASED OPTIC DISC AND OPTIC CUP SEGMENTATION FOR GLA...
SUPERPIXEL CLASSIFICATION BASED OPTIC DISC AND OPTIC CUP SEGMENTATION FOR GLA...
ย 
IRJET -Analysis of Ophthalmic System Applications using Signal Processing
IRJET -Analysis of Ophthalmic System Applications using Signal ProcessingIRJET -Analysis of Ophthalmic System Applications using Signal Processing
IRJET -Analysis of Ophthalmic System Applications using Signal Processing
ย 
IRJET- Approach for Diabetic Retinopathy Analysis using Artificial Neural Net...
IRJET- Approach for Diabetic Retinopathy Analysis using Artificial Neural Net...IRJET- Approach for Diabetic Retinopathy Analysis using Artificial Neural Net...
IRJET- Approach for Diabetic Retinopathy Analysis using Artificial Neural Net...
ย 
H0366051058
H0366051058H0366051058
H0366051058
ย 
Ospe eye for post graduate ophthalmic student such as FCPS. FRCOphth
Ospe eye for post graduate ophthalmic student such as FCPS. FRCOphthOspe eye for post graduate ophthalmic student such as FCPS. FRCOphth
Ospe eye for post graduate ophthalmic student such as FCPS. FRCOphth
ย 
12 correlation of anterior segment parameters
12 correlation of anterior segment parameters12 correlation of anterior segment parameters
12 correlation of anterior segment parameters
ย 
A DISSERTATION ON โ€œEVALUATION OF ANTERIOR SEGMENT IMAGING TECHNIQUES IN DIAG...
A DISSERTATION ON  โ€œEVALUATION OF ANTERIOR SEGMENT IMAGING TECHNIQUES IN DIAG...A DISSERTATION ON  โ€œEVALUATION OF ANTERIOR SEGMENT IMAGING TECHNIQUES IN DIAG...
A DISSERTATION ON โ€œEVALUATION OF ANTERIOR SEGMENT IMAGING TECHNIQUES IN DIAG...
ย 
Lenstar 900 'Improving Outcomes' Brochure
Lenstar 900 'Improving Outcomes' BrochureLenstar 900 'Improving Outcomes' Brochure
Lenstar 900 'Improving Outcomes' Brochure
ย 
Iol power calculation normal and post lasik eyes
Iol power calculation normal and post lasik eyesIol power calculation normal and post lasik eyes
Iol power calculation normal and post lasik eyes
ย 
Opthelmology services & treatments
Opthelmology services & treatmentsOpthelmology services & treatments
Opthelmology services & treatments
ย 
A Comparative Study of Age Related Macular Degeneration In Relation To SD-OCT...
A Comparative Study of Age Related Macular Degeneration In Relation To SD-OCT...A Comparative Study of Age Related Macular Degeneration In Relation To SD-OCT...
A Comparative Study of Age Related Macular Degeneration In Relation To SD-OCT...
ย 
Master thesis - Long Bone Segmentation and Fracture Detection in X-ray Images
Master thesis - Long Bone Segmentation and Fracture Detection in X-ray ImagesMaster thesis - Long Bone Segmentation and Fracture Detection in X-ray Images
Master thesis - Long Bone Segmentation and Fracture Detection in X-ray Images
ย 
Effect of the Human Eye Cornea Material Property on Measurement of the Intrao...
Effect of the Human Eye Cornea Material Property on Measurement of the Intrao...Effect of the Human Eye Cornea Material Property on Measurement of the Intrao...
Effect of the Human Eye Cornea Material Property on Measurement of the Intrao...
ย 

Viewers also liked

Results of phacoemulsification in high myopia
Results of phacoemulsification in high myopiaResults of phacoemulsification in high myopia
Results of phacoemulsification in high myopiaedmond Isufaj
ย 
Phacoemulsification in myopic eyes
Phacoemulsification in myopic eyesPhacoemulsification in myopic eyes
Phacoemulsification in myopic eyesSumeet Agrawal
ย 
Early phacoemulsification experience with toric iol
Early phacoemulsification experience with toric iolEarly phacoemulsification experience with toric iol
Early phacoemulsification experience with toric iolHANY EL-DEFRAWY
ย 
Amar agarwal gas-forced infusion prevents endothelial cell-letter to editor
Amar agarwal gas-forced infusion prevents endothelial cell-letter to editorAmar agarwal gas-forced infusion prevents endothelial cell-letter to editor
Amar agarwal gas-forced infusion prevents endothelial cell-letter to editorDr. Agarwal's Group of Eye Hospital
ย 
Advances in cataract surgery
Advances in cataract surgeryAdvances in cataract surgery
Advances in cataract surgeryperfectvision
ย 
Cataract surgery
Cataract surgery Cataract surgery
Cataract surgery Suleman Muhammad
ย 
OVD RESULTS IN PHACO
OVD RESULTS IN PHACOOVD RESULTS IN PHACO
OVD RESULTS IN PHACOfernando aguilera
ย 
Phacoemulsification
PhacoemulsificationPhacoemulsification
PhacoemulsificationBahaa Halwany
ย 
Phacoemulsification
PhacoemulsificationPhacoemulsification
Phacoemulsificationbsghose
ย 
Common pitfalls while learning phacoemulsification dr suresh k pandey su vi e...
Common pitfalls while learning phacoemulsification dr suresh k pandey su vi e...Common pitfalls while learning phacoemulsification dr suresh k pandey su vi e...
Common pitfalls while learning phacoemulsification dr suresh k pandey su vi e...Dr Suresh Pandey
ย 

Viewers also liked (11)

Results of phacoemulsification in high myopia
Results of phacoemulsification in high myopiaResults of phacoemulsification in high myopia
Results of phacoemulsification in high myopia
ย 
Phacoemulsification in myopic eyes
Phacoemulsification in myopic eyesPhacoemulsification in myopic eyes
Phacoemulsification in myopic eyes
ย 
Early phacoemulsification experience with toric iol
Early phacoemulsification experience with toric iolEarly phacoemulsification experience with toric iol
Early phacoemulsification experience with toric iol
ย 
Amar agarwal gas-forced infusion prevents endothelial cell-letter to editor
Amar agarwal gas-forced infusion prevents endothelial cell-letter to editorAmar agarwal gas-forced infusion prevents endothelial cell-letter to editor
Amar agarwal gas-forced infusion prevents endothelial cell-letter to editor
ย 
Phacodynamic
PhacodynamicPhacodynamic
Phacodynamic
ย 
Advances in cataract surgery
Advances in cataract surgeryAdvances in cataract surgery
Advances in cataract surgery
ย 
Cataract surgery
Cataract surgery Cataract surgery
Cataract surgery
ย 
OVD RESULTS IN PHACO
OVD RESULTS IN PHACOOVD RESULTS IN PHACO
OVD RESULTS IN PHACO
ย 
Phacoemulsification
PhacoemulsificationPhacoemulsification
Phacoemulsification
ย 
Phacoemulsification
PhacoemulsificationPhacoemulsification
Phacoemulsification
ย 
Common pitfalls while learning phacoemulsification dr suresh k pandey su vi e...
Common pitfalls while learning phacoemulsification dr suresh k pandey su vi e...Common pitfalls while learning phacoemulsification dr suresh k pandey su vi e...
Common pitfalls while learning phacoemulsification dr suresh k pandey su vi e...
ย 

Similar to Srk2 Formula in Sri Lanka

12 wavefront aberrations
12 wavefront aberrations12 wavefront aberrations
12 wavefront aberrationsFerrara Ophthalmics
ย 
Ferrara ICRS in Mild Keratoconus
Ferrara ICRS in Mild KeratoconusFerrara ICRS in Mild Keratoconus
Ferrara ICRS in Mild KeratoconusFerrara Ophthalmics
ย 
Clinical discussion on Biometry for IOL power calculation
Clinical discussion on Biometry for IOL power calculationClinical discussion on Biometry for IOL power calculation
Clinical discussion on Biometry for IOL power calculationRezwanul Hasan
ย 
Tomographic fundus features in Pseudoxanthoma Elasticum
Tomographic fundus features in Pseudoxanthoma Elasticum Tomographic fundus features in Pseudoxanthoma Elasticum
Tomographic fundus features in Pseudoxanthoma Elasticum Abdallah Ellabban
ย 
Dr. Vedat Kaya (MAKALE)
Dr. Vedat Kaya (MAKALE)Dr. Vedat Kaya (MAKALE)
Dr. Vedat Kaya (MAKALE)Lasermed Tic
ย 
12 refractive tomographic biomechanical outcomes
12 refractive tomographic biomechanical outcomes12 refractive tomographic biomechanical outcomes
12 refractive tomographic biomechanical outcomesFerrara Ophthalmics
ย 
FR and the astigmatism after penetrating keratoplasty
FR and the astigmatism after penetrating keratoplastyFR and the astigmatism after penetrating keratoplasty
FR and the astigmatism after penetrating keratoplastyFerrara Ophthalmics
ย 
Comparative Study of Visual Outcome between Femtosecond Lasik with Excimer La...
Comparative Study of Visual Outcome between Femtosecond Lasik with Excimer La...Comparative Study of Visual Outcome between Femtosecond Lasik with Excimer La...
Comparative Study of Visual Outcome between Femtosecond Lasik with Excimer La...iosrjce
ย 
Japan Study Influence of overnight orthokeratology on axial length elongation...
Japan Study Influence of overnight orthokeratology on axial length elongation...Japan Study Influence of overnight orthokeratology on axial length elongation...
Japan Study Influence of overnight orthokeratology on axial length elongation...igolenses orthok overnight contact lenses
ย 
Variability of Corneal Deformation Response in Normal, Keratoconic, and Post-...
Variability of Corneal Deformation Response in Normal, Keratoconic, and Post-...Variability of Corneal Deformation Response in Normal, Keratoconic, and Post-...
Variability of Corneal Deformation Response in Normal, Keratoconic, and Post-...asclepiuspdfs
ย 
A scan biometry
A scan biometryA scan biometry
A scan biometryMahantesh B
ย 
Novel biometer first 30 eyes
Novel biometer   first 30 eyesNovel biometer   first 30 eyes
Novel biometer first 30 eyesMichael Mrochen
ย 
Biometery
BiometeryBiometery
BiometerySheim Elteb
ย 
IOL POWER CALCULATION IN CHILDREN-Dr.Preetiilal.pptx
IOL POWER CALCULATION IN CHILDREN-Dr.Preetiilal.pptxIOL POWER CALCULATION IN CHILDREN-Dr.Preetiilal.pptx
IOL POWER CALCULATION IN CHILDREN-Dr.Preetiilal.pptxdrPreetiilal
ย 
000304 ascrs poster_032907
000304 ascrs poster_032907000304 ascrs poster_032907
000304 ascrs poster_032907SUSHIL BHATT
ย 
Journal Presentation.pptx
Journal Presentation.pptxJournal Presentation.pptx
Journal Presentation.pptxDr.Maliha Nawar
ย 
Corneal Astigmatism
Corneal AstigmatismCorneal Astigmatism
Corneal Astigmatismkaushyk
ย 

Similar to Srk2 Formula in Sri Lanka (20)

12 wavefront aberrations
12 wavefront aberrations12 wavefront aberrations
12 wavefront aberrations
ย 
Ferrara ICRS in Mild Keratoconus
Ferrara ICRS in Mild KeratoconusFerrara ICRS in Mild Keratoconus
Ferrara ICRS in Mild Keratoconus
ย 
Clinical discussion on Biometry for IOL power calculation
Clinical discussion on Biometry for IOL power calculationClinical discussion on Biometry for IOL power calculation
Clinical discussion on Biometry for IOL power calculation
ย 
Tomographic fundus features in Pseudoxanthoma Elasticum
Tomographic fundus features in Pseudoxanthoma Elasticum Tomographic fundus features in Pseudoxanthoma Elasticum
Tomographic fundus features in Pseudoxanthoma Elasticum
ย 
Dr. Vedat Kaya (MAKALE)
Dr. Vedat Kaya (MAKALE)Dr. Vedat Kaya (MAKALE)
Dr. Vedat Kaya (MAKALE)
ย 
12 refractive tomographic biomechanical outcomes
12 refractive tomographic biomechanical outcomes12 refractive tomographic biomechanical outcomes
12 refractive tomographic biomechanical outcomes
ย 
FR and the astigmatism after penetrating keratoplasty
FR and the astigmatism after penetrating keratoplastyFR and the astigmatism after penetrating keratoplasty
FR and the astigmatism after penetrating keratoplasty
ย 
Comparative Study of Visual Outcome between Femtosecond Lasik with Excimer La...
Comparative Study of Visual Outcome between Femtosecond Lasik with Excimer La...Comparative Study of Visual Outcome between Femtosecond Lasik with Excimer La...
Comparative Study of Visual Outcome between Femtosecond Lasik with Excimer La...
ย 
Japan Study Influence of overnight orthokeratology on axial length elongation...
Japan Study Influence of overnight orthokeratology on axial length elongation...Japan Study Influence of overnight orthokeratology on axial length elongation...
Japan Study Influence of overnight orthokeratology on axial length elongation...
ย 
Biometry
BiometryBiometry
Biometry
ย 
Variability of Corneal Deformation Response in Normal, Keratoconic, and Post-...
Variability of Corneal Deformation Response in Normal, Keratoconic, and Post-...Variability of Corneal Deformation Response in Normal, Keratoconic, and Post-...
Variability of Corneal Deformation Response in Normal, Keratoconic, and Post-...
ย 
A scan biometry
A scan biometryA scan biometry
A scan biometry
ย 
Novel biometer first 30 eyes
Novel biometer   first 30 eyesNovel biometer   first 30 eyes
Novel biometer first 30 eyes
ย 
Biometery
BiometeryBiometery
Biometery
ย 
EDOF IOL
EDOF IOLEDOF IOL
EDOF IOL
ย 
IOL POWER CALCULATION IN CHILDREN-Dr.Preetiilal.pptx
IOL POWER CALCULATION IN CHILDREN-Dr.Preetiilal.pptxIOL POWER CALCULATION IN CHILDREN-Dr.Preetiilal.pptx
IOL POWER CALCULATION IN CHILDREN-Dr.Preetiilal.pptx
ย 
000304 ascrs poster_032907
000304 ascrs poster_032907000304 ascrs poster_032907
000304 ascrs poster_032907
ย 
Journal Presentation.pptx
Journal Presentation.pptxJournal Presentation.pptx
Journal Presentation.pptx
ย 
Corneal Astigmatism
Corneal AstigmatismCorneal Astigmatism
Corneal Astigmatism
ย 
Iol
IolIol
Iol
ย 

Recently uploaded

Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰8630512678 Top Class Call Girl Service Avai...
Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰8630512678 Top Class Call Girl Service Avai...Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰8630512678 Top Class Call Girl Service Avai...
Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰8630512678 Top Class Call Girl Service Avai...soniyagrag336
ย 
Chennai โฃ๏ธ Call Girl 6378878445 Call Girls in Chennai Escort service book now
Chennai โฃ๏ธ Call Girl 6378878445 Call Girls in Chennai Escort service book nowChennai โฃ๏ธ Call Girl 6378878445 Call Girls in Chennai Escort service book now
Chennai โฃ๏ธ Call Girl 6378878445 Call Girls in Chennai Escort service book nowtanudubay92
ย 
Cardiac Output, Venous Return, and Their Regulation
Cardiac Output, Venous Return, and Their RegulationCardiac Output, Venous Return, and Their Regulation
Cardiac Output, Venous Return, and Their RegulationMedicoseAcademics
ย 
Call Girls Bangalore - 450+ Call Girl Cash Payment ๐Ÿ’ฏCall Us ๐Ÿ” 6378878445 ๐Ÿ” ๐Ÿ’ƒ ...
Call Girls Bangalore - 450+ Call Girl Cash Payment ๐Ÿ’ฏCall Us ๐Ÿ” 6378878445 ๐Ÿ” ๐Ÿ’ƒ ...Call Girls Bangalore - 450+ Call Girl Cash Payment ๐Ÿ’ฏCall Us ๐Ÿ” 6378878445 ๐Ÿ” ๐Ÿ’ƒ ...
Call Girls Bangalore - 450+ Call Girl Cash Payment ๐Ÿ’ฏCall Us ๐Ÿ” 6378878445 ๐Ÿ” ๐Ÿ’ƒ ...gragneelam30
ย 
Race Course Road } Book Call Girls in Bangalore | Whatsapp No 6378878445 VIP ...
Race Course Road } Book Call Girls in Bangalore | Whatsapp No 6378878445 VIP ...Race Course Road } Book Call Girls in Bangalore | Whatsapp No 6378878445 VIP ...
Race Course Road } Book Call Girls in Bangalore | Whatsapp No 6378878445 VIP ...dishamehta3332
ย 
Call Girls Service Jaipur {9521753030 } โค๏ธVVIP BHAWNA Call Girl in Jaipur Raj...
Call Girls Service Jaipur {9521753030 } โค๏ธVVIP BHAWNA Call Girl in Jaipur Raj...Call Girls Service Jaipur {9521753030 } โค๏ธVVIP BHAWNA Call Girl in Jaipur Raj...
Call Girls Service Jaipur {9521753030 } โค๏ธVVIP BHAWNA Call Girl in Jaipur Raj...Janvi Singh
ย 
Circulatory Shock, types and stages, compensatory mechanisms
Circulatory Shock, types and stages, compensatory mechanismsCirculatory Shock, types and stages, compensatory mechanisms
Circulatory Shock, types and stages, compensatory mechanismsMedicoseAcademics
ย 
7 steps How to prevent Thalassemia : Dr Sharda Jain & Vandana Gupta
7 steps How to prevent Thalassemia : Dr Sharda Jain & Vandana Gupta7 steps How to prevent Thalassemia : Dr Sharda Jain & Vandana Gupta
7 steps How to prevent Thalassemia : Dr Sharda Jain & Vandana GuptaLifecare Centre
ย 
ANATOMY AND PHYSIOLOGY OF REPRODUCTIVE SYSTEM.pptx
ANATOMY AND PHYSIOLOGY OF REPRODUCTIVE SYSTEM.pptxANATOMY AND PHYSIOLOGY OF REPRODUCTIVE SYSTEM.pptx
ANATOMY AND PHYSIOLOGY OF REPRODUCTIVE SYSTEM.pptxSwetaba Besh
ย 
Call girls Service Phullen / 9332606886 Genuine Call girls with real Photos a...
Call girls Service Phullen / 9332606886 Genuine Call girls with real Photos a...Call girls Service Phullen / 9332606886 Genuine Call girls with real Photos a...
Call girls Service Phullen / 9332606886 Genuine Call girls with real Photos a...call girls hydrabad
ย 
Russian Call Girls In Pune ๐Ÿ‘‰ Just CALL ME: 9352988975 โœ…โค๏ธ๐Ÿ’ฏlow cost unlimited ...
Russian Call Girls In Pune ๐Ÿ‘‰ Just CALL ME: 9352988975 โœ…โค๏ธ๐Ÿ’ฏlow cost unlimited ...Russian Call Girls In Pune ๐Ÿ‘‰ Just CALL ME: 9352988975 โœ…โค๏ธ๐Ÿ’ฏlow cost unlimited ...
Russian Call Girls In Pune ๐Ÿ‘‰ Just CALL ME: 9352988975 โœ…โค๏ธ๐Ÿ’ฏlow cost unlimited ...chanderprakash5506
ย 
Lucknow Call Girls Service { 9984666624 } โค๏ธVVIP ROCKY Call Girl in Lucknow U...
Lucknow Call Girls Service { 9984666624 } โค๏ธVVIP ROCKY Call Girl in Lucknow U...Lucknow Call Girls Service { 9984666624 } โค๏ธVVIP ROCKY Call Girl in Lucknow U...
Lucknow Call Girls Service { 9984666624 } โค๏ธVVIP ROCKY Call Girl in Lucknow U...Janvi Singh
ย 
Call Girls Mussoorie Just Call 8854095900 Top Class Call Girl Service Available
Call Girls Mussoorie Just Call 8854095900 Top Class Call Girl Service AvailableCall Girls Mussoorie Just Call 8854095900 Top Class Call Girl Service Available
Call Girls Mussoorie Just Call 8854095900 Top Class Call Girl Service AvailableJanvi Singh
ย 
๐Ÿ’ž Safe And Secure Call Girls Coimbatore๐Ÿงฟ 6378878445 ๐Ÿงฟ High Class Coimbatore C...
๐Ÿ’ž Safe And Secure Call Girls Coimbatore๐Ÿงฟ 6378878445 ๐Ÿงฟ High Class Coimbatore C...๐Ÿ’ž Safe And Secure Call Girls Coimbatore๐Ÿงฟ 6378878445 ๐Ÿงฟ High Class Coimbatore C...
๐Ÿ’ž Safe And Secure Call Girls Coimbatore๐Ÿงฟ 6378878445 ๐Ÿงฟ High Class Coimbatore C...dilbirsingh0889
ย 
โค๏ธ Chandigarh Call Girlsโ˜Ž๏ธ98151-579OOโ˜Ž๏ธ Call Girl service in Chandigarh โ˜Ž๏ธ Ch...
โค๏ธ Chandigarh Call Girlsโ˜Ž๏ธ98151-579OOโ˜Ž๏ธ Call Girl service in Chandigarh โ˜Ž๏ธ Ch...โค๏ธ Chandigarh Call Girlsโ˜Ž๏ธ98151-579OOโ˜Ž๏ธ Call Girl service in Chandigarh โ˜Ž๏ธ Ch...
โค๏ธ Chandigarh Call Girlsโ˜Ž๏ธ98151-579OOโ˜Ž๏ธ Call Girl service in Chandigarh โ˜Ž๏ธ Ch...Rashmi Entertainment
ย 
Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰ 8875999948 Top Class Call Girl Service Ava...
Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰ 8875999948 Top Class Call Girl Service Ava...Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰ 8875999948 Top Class Call Girl Service Ava...
Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰ 8875999948 Top Class Call Girl Service Ava...Janvi Singh
ย 
Call Girls Rishikesh Just Call 9667172968 Top Class Call Girl Service Available
Call Girls Rishikesh Just Call 9667172968 Top Class Call Girl Service AvailableCall Girls Rishikesh Just Call 9667172968 Top Class Call Girl Service Available
Call Girls Rishikesh Just Call 9667172968 Top Class Call Girl Service AvailableSteve Davis
ย 
Difference Between Skeletal Smooth and Cardiac Muscles
Difference Between Skeletal Smooth and Cardiac MusclesDifference Between Skeletal Smooth and Cardiac Muscles
Difference Between Skeletal Smooth and Cardiac MusclesMedicoseAcademics
ย 
Call Girl in Chennai | Whatsapp No ๐Ÿ“ž 7427069034 ๐Ÿ“ž VIP Escorts Service Availab...
Call Girl in Chennai | Whatsapp No ๐Ÿ“ž 7427069034 ๐Ÿ“ž VIP Escorts Service Availab...Call Girl in Chennai | Whatsapp No ๐Ÿ“ž 7427069034 ๐Ÿ“ž VIP Escorts Service Availab...
Call Girl in Chennai | Whatsapp No ๐Ÿ“ž 7427069034 ๐Ÿ“ž VIP Escorts Service Availab...amritaverma53
ย 
Call Girls Kathua Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Kathua Just Call 8250077686 Top Class Call Girl Service AvailableCall Girls Kathua Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Kathua Just Call 8250077686 Top Class Call Girl Service AvailableDipal Arora
ย 

Recently uploaded (20)

Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰8630512678 Top Class Call Girl Service Avai...
Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰8630512678 Top Class Call Girl Service Avai...Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰8630512678 Top Class Call Girl Service Avai...
Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰8630512678 Top Class Call Girl Service Avai...
ย 
Chennai โฃ๏ธ Call Girl 6378878445 Call Girls in Chennai Escort service book now
Chennai โฃ๏ธ Call Girl 6378878445 Call Girls in Chennai Escort service book nowChennai โฃ๏ธ Call Girl 6378878445 Call Girls in Chennai Escort service book now
Chennai โฃ๏ธ Call Girl 6378878445 Call Girls in Chennai Escort service book now
ย 
Cardiac Output, Venous Return, and Their Regulation
Cardiac Output, Venous Return, and Their RegulationCardiac Output, Venous Return, and Their Regulation
Cardiac Output, Venous Return, and Their Regulation
ย 
Call Girls Bangalore - 450+ Call Girl Cash Payment ๐Ÿ’ฏCall Us ๐Ÿ” 6378878445 ๐Ÿ” ๐Ÿ’ƒ ...
Call Girls Bangalore - 450+ Call Girl Cash Payment ๐Ÿ’ฏCall Us ๐Ÿ” 6378878445 ๐Ÿ” ๐Ÿ’ƒ ...Call Girls Bangalore - 450+ Call Girl Cash Payment ๐Ÿ’ฏCall Us ๐Ÿ” 6378878445 ๐Ÿ” ๐Ÿ’ƒ ...
Call Girls Bangalore - 450+ Call Girl Cash Payment ๐Ÿ’ฏCall Us ๐Ÿ” 6378878445 ๐Ÿ” ๐Ÿ’ƒ ...
ย 
Race Course Road } Book Call Girls in Bangalore | Whatsapp No 6378878445 VIP ...
Race Course Road } Book Call Girls in Bangalore | Whatsapp No 6378878445 VIP ...Race Course Road } Book Call Girls in Bangalore | Whatsapp No 6378878445 VIP ...
Race Course Road } Book Call Girls in Bangalore | Whatsapp No 6378878445 VIP ...
ย 
Call Girls Service Jaipur {9521753030 } โค๏ธVVIP BHAWNA Call Girl in Jaipur Raj...
Call Girls Service Jaipur {9521753030 } โค๏ธVVIP BHAWNA Call Girl in Jaipur Raj...Call Girls Service Jaipur {9521753030 } โค๏ธVVIP BHAWNA Call Girl in Jaipur Raj...
Call Girls Service Jaipur {9521753030 } โค๏ธVVIP BHAWNA Call Girl in Jaipur Raj...
ย 
Circulatory Shock, types and stages, compensatory mechanisms
Circulatory Shock, types and stages, compensatory mechanismsCirculatory Shock, types and stages, compensatory mechanisms
Circulatory Shock, types and stages, compensatory mechanisms
ย 
7 steps How to prevent Thalassemia : Dr Sharda Jain & Vandana Gupta
7 steps How to prevent Thalassemia : Dr Sharda Jain & Vandana Gupta7 steps How to prevent Thalassemia : Dr Sharda Jain & Vandana Gupta
7 steps How to prevent Thalassemia : Dr Sharda Jain & Vandana Gupta
ย 
ANATOMY AND PHYSIOLOGY OF REPRODUCTIVE SYSTEM.pptx
ANATOMY AND PHYSIOLOGY OF REPRODUCTIVE SYSTEM.pptxANATOMY AND PHYSIOLOGY OF REPRODUCTIVE SYSTEM.pptx
ANATOMY AND PHYSIOLOGY OF REPRODUCTIVE SYSTEM.pptx
ย 
Call girls Service Phullen / 9332606886 Genuine Call girls with real Photos a...
Call girls Service Phullen / 9332606886 Genuine Call girls with real Photos a...Call girls Service Phullen / 9332606886 Genuine Call girls with real Photos a...
Call girls Service Phullen / 9332606886 Genuine Call girls with real Photos a...
ย 
Russian Call Girls In Pune ๐Ÿ‘‰ Just CALL ME: 9352988975 โœ…โค๏ธ๐Ÿ’ฏlow cost unlimited ...
Russian Call Girls In Pune ๐Ÿ‘‰ Just CALL ME: 9352988975 โœ…โค๏ธ๐Ÿ’ฏlow cost unlimited ...Russian Call Girls In Pune ๐Ÿ‘‰ Just CALL ME: 9352988975 โœ…โค๏ธ๐Ÿ’ฏlow cost unlimited ...
Russian Call Girls In Pune ๐Ÿ‘‰ Just CALL ME: 9352988975 โœ…โค๏ธ๐Ÿ’ฏlow cost unlimited ...
ย 
Lucknow Call Girls Service { 9984666624 } โค๏ธVVIP ROCKY Call Girl in Lucknow U...
Lucknow Call Girls Service { 9984666624 } โค๏ธVVIP ROCKY Call Girl in Lucknow U...Lucknow Call Girls Service { 9984666624 } โค๏ธVVIP ROCKY Call Girl in Lucknow U...
Lucknow Call Girls Service { 9984666624 } โค๏ธVVIP ROCKY Call Girl in Lucknow U...
ย 
Call Girls Mussoorie Just Call 8854095900 Top Class Call Girl Service Available
Call Girls Mussoorie Just Call 8854095900 Top Class Call Girl Service AvailableCall Girls Mussoorie Just Call 8854095900 Top Class Call Girl Service Available
Call Girls Mussoorie Just Call 8854095900 Top Class Call Girl Service Available
ย 
๐Ÿ’ž Safe And Secure Call Girls Coimbatore๐Ÿงฟ 6378878445 ๐Ÿงฟ High Class Coimbatore C...
๐Ÿ’ž Safe And Secure Call Girls Coimbatore๐Ÿงฟ 6378878445 ๐Ÿงฟ High Class Coimbatore C...๐Ÿ’ž Safe And Secure Call Girls Coimbatore๐Ÿงฟ 6378878445 ๐Ÿงฟ High Class Coimbatore C...
๐Ÿ’ž Safe And Secure Call Girls Coimbatore๐Ÿงฟ 6378878445 ๐Ÿงฟ High Class Coimbatore C...
ย 
โค๏ธ Chandigarh Call Girlsโ˜Ž๏ธ98151-579OOโ˜Ž๏ธ Call Girl service in Chandigarh โ˜Ž๏ธ Ch...
โค๏ธ Chandigarh Call Girlsโ˜Ž๏ธ98151-579OOโ˜Ž๏ธ Call Girl service in Chandigarh โ˜Ž๏ธ Ch...โค๏ธ Chandigarh Call Girlsโ˜Ž๏ธ98151-579OOโ˜Ž๏ธ Call Girl service in Chandigarh โ˜Ž๏ธ Ch...
โค๏ธ Chandigarh Call Girlsโ˜Ž๏ธ98151-579OOโ˜Ž๏ธ Call Girl service in Chandigarh โ˜Ž๏ธ Ch...
ย 
Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰ 8875999948 Top Class Call Girl Service Ava...
Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰ 8875999948 Top Class Call Girl Service Ava...Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰ 8875999948 Top Class Call Girl Service Ava...
Call Girls in Lucknow Just Call ๐Ÿ‘‰๐Ÿ‘‰ 8875999948 Top Class Call Girl Service Ava...
ย 
Call Girls Rishikesh Just Call 9667172968 Top Class Call Girl Service Available
Call Girls Rishikesh Just Call 9667172968 Top Class Call Girl Service AvailableCall Girls Rishikesh Just Call 9667172968 Top Class Call Girl Service Available
Call Girls Rishikesh Just Call 9667172968 Top Class Call Girl Service Available
ย 
Difference Between Skeletal Smooth and Cardiac Muscles
Difference Between Skeletal Smooth and Cardiac MusclesDifference Between Skeletal Smooth and Cardiac Muscles
Difference Between Skeletal Smooth and Cardiac Muscles
ย 
Call Girl in Chennai | Whatsapp No ๐Ÿ“ž 7427069034 ๐Ÿ“ž VIP Escorts Service Availab...
Call Girl in Chennai | Whatsapp No ๐Ÿ“ž 7427069034 ๐Ÿ“ž VIP Escorts Service Availab...Call Girl in Chennai | Whatsapp No ๐Ÿ“ž 7427069034 ๐Ÿ“ž VIP Escorts Service Availab...
Call Girl in Chennai | Whatsapp No ๐Ÿ“ž 7427069034 ๐Ÿ“ž VIP Escorts Service Availab...
ย 
Call Girls Kathua Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Kathua Just Call 8250077686 Top Class Call Girl Service AvailableCall Girls Kathua Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Kathua Just Call 8250077686 Top Class Call Girl Service Available
ย 

Srk2 Formula in Sri Lanka

  • 1. Does Sanders-Retzlaff-Kraff (SRK-2) formula suit a Sri Lankan population in phacoemulsification cataract surgery of medium axial length? MS MS Amaratunge , J De Silva1, IM Wasthuhewaarachchi , SH Uyangoda , MAJI Mallawaarachchi , R 1 2 1 1 Premarathna3, AAN Nishad4 Vijaya Kumaratunge Memorial Hospital, Seeduwa Teaching Hospital, Vavuniya 1 2 3 Faculty of Medicine, University of Kelaniya 4Post Graduate Institute of Medicine, University of Colombo Results ๏ถ274 patients, mean (S.D.) age was 65.3(10) years. ๏ถ56% were females. Introduction ๏ถ90(32.8%) had diabetes mellitus and 107(39%) had Intraocular lens (IOL) power calculation formulas hypertension. have evolved over the past 25 years. The most ๏ถThe right eye was operated in 142 (51.8%) patients and the recent formulas (third and fourth generation) are the left eye in 132 (48.2%). most useful and precise Table 1. Visual acuity 7 days post operatively Prediction accuracy depends on three factors: Visual acuity Percentage #accuracy of the biometric data (axial length and 6/6 79% keratometry readings), #accuracy of manufactured IOL power quality > 6/9 93% control #accuracy of the IOL power formulas > 6/12 to 6/36 97% Introduction of phacoemulsification with small ๏ถMean (S.D.) IOL power used was 21.50D (1.90D), (range; 10.0D to incision techniques, minimizing cylindrical error, and 25.5D). continuous curvilinear capsulorhexis technique, that ๏ถThe mean predicted refractive error with SRK-2 was -0.300 ยฑ 0.145 D allows better IOL capsular fixation and more (range, -0.05D to -0.7D). predictable ELP ๏ถThe mean achieved refractive error was -0.220 ยฑ 0.732 D (range, +1.00 to -1.5 D). ๏ถThe difference between predicted and achieved refractive error The correct IOL power became a crucial step for presented a slight hyperopic shift (mean ยฑ SD: 0.054 ยฑ 0.397 D), good refractive outcome in the preoperative examination of cataract surgery. ๏ถ ranging from -1.31 D to + 1.19 D. Graph 1. Correlation between Targeted refraction and Refraction Targeted with SRK 2 (Pearson Correlation=0.126 (p=0.038) Objectives To evaluate the predictive accuracy of post operative refraction using SRK-2 formula in phacoemulsification in eyes with 22-26mm axial length. Methods ๏ถSenile cataract patients who underwent phacoemulsification and IOL between January to December 2010 in Gampaha district by a single Conclusion surgeon. SRK-2 formula as a good option to predict the refractive error ๏ถEyes with 22-26mm axial length. after cataract extraction by phacoemulsification in eyes with ๏ถSingle examiner measured simulated manual medium axial length. keratometry preoperatively and seven days postoperatively; uncorrected visual acuity, slit lamp Unique in reporting eyes implanted in the capsular bag by the examination of the anterior segment and best same surgeon, with preoperative measurements obtained from spectacle-corrected visual acuity (BSCVA) were taken. the same instrumentation by the same method and same ๏ถThe implanted IOL power was used to calculate technician, using SRK-2 formula for IOL power calculation in eyes predicted postoperative refractive error by SRK-2 with medium axial length that underwent phacoemulsification formula. with foldable IOL implantation. Sri Lanka Medical Association , 125th Anniversary International Medical Congress, Colombo, Sri Lanka