SlideShare a Scribd company logo
Kamal thakur
2nd year bsc opto
Nethradhama college of opto
Definition;
Anisometropia is the
condition in which the
two eyes have
unequal refractive power.
 Congenital anisometropia; it occur due to differential
growth of the eyeballs.
 Acquired anisometropia; may occur due to uniocular
aphakia after removal of crystalline lens or due to
implantation of IOL of wrong power.
 Absolute anisometropia; it is that condition in which
the refractive power of two eyes is unequal.
 Relative anisometropia; the total refraction of the two
eyes can be equal, but the axial length may be
different. This will lead to clear retinal image but a
difference in the size of the retinal images.
 Simple
 Compound
 Mixed
 Simple astigmatic anisometropia
 Compound astigmatic anisometropia
 Mixed astigmatic anisometropia
•Simple anisometropia; in this , one eye is
normal and the other either myopic (simple
myopic anisometropia) or hypermetropic
(simple hypermetropic anisometropia).
•Compound anisometropia; both eyes are
either hypermetropic or myopic , but one eye
is having higher refractive error than the other.
•Mixed anisometropia; In this , one eye is
myopic and the other is hypermetropic. This is
also called antimetropia.
• simple astigmatic anisometropia; when one
eye is normal and the other has either simple
myopic or hypermetropic astigmatism.
•Compound astigmatic anisometropia; when
the both eyes are astigmatic but of unequal
degree.
Three possibilities are there :
1. Binocular single vision is present in small degree
of anisometropia .
2. Uniocular vision. When refractive error in one eye
is of high degree.
3. Alternate vision occurs when one eye is
hypermetropic and other myopic , then
hypermetropic eye is used for distant vision and
myopic for near.
1. Spectacles. The corrective spectacles can be
tolerated up to maximum difference of 4D.After
that diplopia may occurs.
2. Contact lenses are advised for higher degrees of
anisometropia .
3. IOL implantation for uniocular aphakia.
4. Refractive corneal surgery for unilateral high
myopia , astigmatism and hypermetropia.
•Comprehensive Ophthalmology
•google
Anisometropia

More Related Content

What's hot

Accommodation/Accommodative facility
Accommodation/Accommodative facilityAccommodation/Accommodative facility
Accommodation/Accommodative facility
kausar Ali
 
Goldman applanation tonometry
 Goldman applanation tonometry Goldman applanation tonometry
Goldman applanation tonometryHossein Mirzaie
 
Aphakia
AphakiaAphakia
Jackson cross cylinder
Jackson cross cylinderJackson cross cylinder
Jackson cross cylinder
OPTOM FASLU MUHAMMED
 
Techniques of tear film evaluation by Raju Kaiti
Techniques of tear film evaluation  by Raju KaitiTechniques of tear film evaluation  by Raju Kaiti
Techniques of tear film evaluation by Raju Kaiti
Raju Kaiti
 
Cycloplegic retinoscopy
Cycloplegic retinoscopy Cycloplegic retinoscopy
Cycloplegic retinoscopy
R J
 
Cover tests
Cover testsCover tests
Cover tests
Dr Samarth Mishra
 
Pachymetry
PachymetryPachymetry
Pachymetry
SSSIHMS-PG
 
Pediatric refraction
Pediatric       refractionPediatric       refraction
Pediatric refraction
Yashaswee Bhattarai
 
Keratometer
KeratometerKeratometer
Keratometer
Shishir Shukla
 
Stereopsis
Stereopsis  Stereopsis
Presbyopia/ Methods of Presbyopic Addition Determination (healthkura.com)
Presbyopia/ Methods of Presbyopic Addition Determination (healthkura.com)Presbyopia/ Methods of Presbyopic Addition Determination (healthkura.com)
Presbyopia/ Methods of Presbyopic Addition Determination (healthkura.com)
Bikash Sapkota
 
Bandage Contact Lens
Bandage Contact LensBandage Contact Lens
Bandage Contact Lens
Loknath Goswami
 
Assessment of corneal endothelium
Assessment of corneal endotheliumAssessment of corneal endothelium
Assessment of corneal endothelium
drvasant162
 
Convergence insufficiency
Convergence insufficiencyConvergence insufficiency
Convergence insufficiency
PavanShroff
 
Soft Toric Contact lens
Soft Toric Contact lensSoft Toric Contact lens
Soft Toric Contact lens
aditi jobaliya vora
 
Dynamic retinoscopy srijana
Dynamic retinoscopy srijanaDynamic retinoscopy srijana
Dynamic retinoscopy srijana
Srijana Lamichhane
 

What's hot (20)

Accommodation/Accommodative facility
Accommodation/Accommodative facilityAccommodation/Accommodative facility
Accommodation/Accommodative facility
 
Goldman applanation tonometry
 Goldman applanation tonometry Goldman applanation tonometry
Goldman applanation tonometry
 
Aphakia
AphakiaAphakia
Aphakia
 
Jackson cross cylinder
Jackson cross cylinderJackson cross cylinder
Jackson cross cylinder
 
Techniques of tear film evaluation by Raju Kaiti
Techniques of tear film evaluation  by Raju KaitiTechniques of tear film evaluation  by Raju Kaiti
Techniques of tear film evaluation by Raju Kaiti
 
Cycloplegic retinoscopy
Cycloplegic retinoscopy Cycloplegic retinoscopy
Cycloplegic retinoscopy
 
Cover tests
Cover testsCover tests
Cover tests
 
Pachymetry
PachymetryPachymetry
Pachymetry
 
Pediatric refraction
Pediatric       refractionPediatric       refraction
Pediatric refraction
 
Astigmatism 2
Astigmatism 2Astigmatism 2
Astigmatism 2
 
Keratometer
KeratometerKeratometer
Keratometer
 
Stereopsis
Stereopsis  Stereopsis
Stereopsis
 
Maddox rod
Maddox rodMaddox rod
Maddox rod
 
Presbyopia/ Methods of Presbyopic Addition Determination (healthkura.com)
Presbyopia/ Methods of Presbyopic Addition Determination (healthkura.com)Presbyopia/ Methods of Presbyopic Addition Determination (healthkura.com)
Presbyopia/ Methods of Presbyopic Addition Determination (healthkura.com)
 
Bandage Contact Lens
Bandage Contact LensBandage Contact Lens
Bandage Contact Lens
 
Assessment of corneal endothelium
Assessment of corneal endotheliumAssessment of corneal endothelium
Assessment of corneal endothelium
 
Convergence insufficiency
Convergence insufficiencyConvergence insufficiency
Convergence insufficiency
 
Soft Toric Contact lens
Soft Toric Contact lensSoft Toric Contact lens
Soft Toric Contact lens
 
Retinoscopy
RetinoscopyRetinoscopy
Retinoscopy
 
Dynamic retinoscopy srijana
Dynamic retinoscopy srijanaDynamic retinoscopy srijana
Dynamic retinoscopy srijana
 

Viewers also liked

Aniseikona , anisometropia & astigmatism
Aniseikona , anisometropia & astigmatismAniseikona , anisometropia & astigmatism
Aniseikona , anisometropia & astigmatism
Om Patel
 
Anisometropia
AnisometropiaAnisometropia
Anisometropia
kausar Ali
 
Astigmatism, anisometropia, anisekonia.
Astigmatism, anisometropia, anisekonia.Astigmatism, anisometropia, anisekonia.
Astigmatism, anisometropia, anisekonia.
Vishy Srivastava
 
ANIXOMETROPIA Y ANISEICONIA
ANIXOMETROPIA Y ANISEICONIAANIXOMETROPIA Y ANISEICONIA
ANIXOMETROPIA Y ANISEICONIA
Angel Condori Lopez
 
Causes and management of aniseikonia
Causes and management of aniseikoniaCauses and management of aniseikonia
Causes and management of aniseikoniamaclester manahan
 
Aniso saiful
Aniso saifulAniso saiful
Aniso saiful
Saiful Islam
 
Ambliopia anisometropica
Ambliopia anisometropica Ambliopia anisometropica
Aphakia and pseudophakia
Aphakia and pseudophakiaAphakia and pseudophakia
Aphakia and pseudophakia
shweta goyal
 
Aphakia by SURAJ CHHETRI
Aphakia  by SURAJ CHHETRIAphakia  by SURAJ CHHETRI
Aphakia by SURAJ CHHETRI
Suraj Chhetri
 
Introduction, Assessment and Management of Amblyopia
Introduction, Assessment and Management of Amblyopia Introduction, Assessment and Management of Amblyopia
Introduction, Assessment and Management of Amblyopia
Anis Suzanna Mohamad
 
Presbyopia
PresbyopiaPresbyopia
Presbyopia
Sivateja Challa
 
Best choice frames & lenses for Aphakia
Best choice frames & lenses for AphakiaBest choice frames & lenses for Aphakia
Best choice frames & lenses for Aphakia
Mohammad Assassi
 
Advances in presbyopia treatment
Advances in presbyopia treatmentAdvances in presbyopia treatment
Advances in presbyopia treatment
perfectvision
 

Viewers also liked (20)

Aniseikona , anisometropia & astigmatism
Aniseikona , anisometropia & astigmatismAniseikona , anisometropia & astigmatism
Aniseikona , anisometropia & astigmatism
 
Anisometropia
AnisometropiaAnisometropia
Anisometropia
 
Astigmatism, anisometropia, anisekonia.
Astigmatism, anisometropia, anisekonia.Astigmatism, anisometropia, anisekonia.
Astigmatism, anisometropia, anisekonia.
 
Aniseikonia
AniseikoniaAniseikonia
Aniseikonia
 
ANIXOMETROPIA Y ANISEICONIA
ANIXOMETROPIA Y ANISEICONIAANIXOMETROPIA Y ANISEICONIA
ANIXOMETROPIA Y ANISEICONIA
 
Aniseikonia
AniseikoniaAniseikonia
Aniseikonia
 
Causes and management of aniseikonia
Causes and management of aniseikoniaCauses and management of aniseikonia
Causes and management of aniseikonia
 
Aniso saiful
Aniso saifulAniso saiful
Aniso saiful
 
Ambliopia anisometropica
Ambliopia anisometropica Ambliopia anisometropica
Ambliopia anisometropica
 
Aphakia and pseudophakia
Aphakia and pseudophakiaAphakia and pseudophakia
Aphakia and pseudophakia
 
Aphakia by SURAJ CHHETRI
Aphakia  by SURAJ CHHETRIAphakia  by SURAJ CHHETRI
Aphakia by SURAJ CHHETRI
 
Introduction, Assessment and Management of Amblyopia
Introduction, Assessment and Management of Amblyopia Introduction, Assessment and Management of Amblyopia
Introduction, Assessment and Management of Amblyopia
 
Measurement of aniseikonia
Measurement of aniseikoniaMeasurement of aniseikonia
Measurement of aniseikonia
 
Presbyopia
PresbyopiaPresbyopia
Presbyopia
 
Presbyopia
PresbyopiaPresbyopia
Presbyopia
 
Presbyopia
PresbyopiaPresbyopia
Presbyopia
 
Best choice frames & lenses for Aphakia
Best choice frames & lenses for AphakiaBest choice frames & lenses for Aphakia
Best choice frames & lenses for Aphakia
 
Aphakia
AphakiaAphakia
Aphakia
 
Advances in presbyopia treatment
Advances in presbyopia treatmentAdvances in presbyopia treatment
Advances in presbyopia treatment
 
Amblyopia
AmblyopiaAmblyopia
Amblyopia
 

Similar to Anisometropia

Anisometropia.pptx
Anisometropia.pptxAnisometropia.pptx
Anisometropia.pptx
MUHAMMADRASHID311088
 
Anisometropia
Anisometropia Anisometropia
Anisometropia
RAJU RATHORE ™️
 
Anisometrpia
AnisometrpiaAnisometrpia
Anisometrpia
Jeevana Ande
 
Anisometropia
AnisometropiaAnisometropia
Anisometropia
University of Gondar
 
Prescription of glasses in children
Prescription of glasses in childrenPrescription of glasses in children
Prescription of glasses in children
Eranda Wannigama
 
Errors of refraction
Errors of refractionErrors of refraction
Errors of refraction
AbhashAcharya1
 
Aniseikonia [ophthalmology description for medical students ]
Aniseikonia [ophthalmology description for medical students ]Aniseikonia [ophthalmology description for medical students ]
Aniseikonia [ophthalmology description for medical students ]
Madhuri Kureti
 
Binocular optical defects
Binocular optical defects Binocular optical defects
Binocular optical defects
MushahidRaza8
 
Lecture on amblyopia for 4th year mbbs undergraduate students by prof. dr. hu...
Lecture on amblyopia for 4th year mbbs undergraduate students by prof. dr. hu...Lecture on amblyopia for 4th year mbbs undergraduate students by prof. dr. hu...
Lecture on amblyopia for 4th year mbbs undergraduate students by prof. dr. hu...
DrHussainAhmadKhaqan
 
Refractive errors & their management
Refractive errors & their managementRefractive errors & their management
Refractive errors & their management
AsimAbhasSwain1
 
11. Refractive errors.pptx
11. Refractive errors.pptx11. Refractive errors.pptx
11. Refractive errors.pptx
Annie Amjad
 
11. Refractive errors.pptx
11. Refractive errors.pptx11. Refractive errors.pptx
11. Refractive errors.pptx
annieamjad1
 
hypermetropia.pptx
hypermetropia.pptxhypermetropia.pptx
hypermetropia.pptx
ShilpaHedaooBajaj
 
optics.Dr.Mutaz.ppt
optics.Dr.Mutaz.pptoptics.Dr.Mutaz.ppt
optics.Dr.Mutaz.ppt
Adel930879
 
2.Amblyopia and Eccentric fixation.pptx
2.Amblyopia and Eccentric fixation.pptx2.Amblyopia and Eccentric fixation.pptx
2.Amblyopia and Eccentric fixation.pptx
linda129770
 
OWP Amblyopia.pptx
OWP Amblyopia.pptxOWP Amblyopia.pptx
OWP Amblyopia.pptx
Praneet MISHRA
 
Refractive Errors
Refractive ErrorsRefractive Errors
Refractive Errors
Surendran Radjou
 
Refractive Errors
Refractive ErrorsRefractive Errors
Refractive Errors
Dr. Nghitukuhamba Kalipi
 
Hypermetropia and Aphakia
Hypermetropia and AphakiaHypermetropia and Aphakia
Hypermetropia and Aphakia
KumarSingh44
 

Similar to Anisometropia (20)

Anisometropia.pptx
Anisometropia.pptxAnisometropia.pptx
Anisometropia.pptx
 
Anisometropia
Anisometropia Anisometropia
Anisometropia
 
Anisometrpia
AnisometrpiaAnisometrpia
Anisometrpia
 
Anisometropia
AnisometropiaAnisometropia
Anisometropia
 
Prescription of glasses in children
Prescription of glasses in childrenPrescription of glasses in children
Prescription of glasses in children
 
Errors of refraction
Errors of refractionErrors of refraction
Errors of refraction
 
Squint
SquintSquint
Squint
 
Aniseikonia [ophthalmology description for medical students ]
Aniseikonia [ophthalmology description for medical students ]Aniseikonia [ophthalmology description for medical students ]
Aniseikonia [ophthalmology description for medical students ]
 
Binocular optical defects
Binocular optical defects Binocular optical defects
Binocular optical defects
 
Lecture on amblyopia for 4th year mbbs undergraduate students by prof. dr. hu...
Lecture on amblyopia for 4th year mbbs undergraduate students by prof. dr. hu...Lecture on amblyopia for 4th year mbbs undergraduate students by prof. dr. hu...
Lecture on amblyopia for 4th year mbbs undergraduate students by prof. dr. hu...
 
Refractive errors & their management
Refractive errors & their managementRefractive errors & their management
Refractive errors & their management
 
11. Refractive errors.pptx
11. Refractive errors.pptx11. Refractive errors.pptx
11. Refractive errors.pptx
 
11. Refractive errors.pptx
11. Refractive errors.pptx11. Refractive errors.pptx
11. Refractive errors.pptx
 
hypermetropia.pptx
hypermetropia.pptxhypermetropia.pptx
hypermetropia.pptx
 
optics.Dr.Mutaz.ppt
optics.Dr.Mutaz.pptoptics.Dr.Mutaz.ppt
optics.Dr.Mutaz.ppt
 
2.Amblyopia and Eccentric fixation.pptx
2.Amblyopia and Eccentric fixation.pptx2.Amblyopia and Eccentric fixation.pptx
2.Amblyopia and Eccentric fixation.pptx
 
OWP Amblyopia.pptx
OWP Amblyopia.pptxOWP Amblyopia.pptx
OWP Amblyopia.pptx
 
Refractive Errors
Refractive ErrorsRefractive Errors
Refractive Errors
 
Refractive Errors
Refractive ErrorsRefractive Errors
Refractive Errors
 
Hypermetropia and Aphakia
Hypermetropia and AphakiaHypermetropia and Aphakia
Hypermetropia and Aphakia
 

More from kamal thakur

Sclera
ScleraSclera
Sclera
kamal thakur
 
Glycolysis
Glycolysis Glycolysis
Glycolysis
kamal thakur
 
ptosis
ptosisptosis
ptosis
kamal thakur
 
Contact lens fitting in keratoconus copy
Contact lens fitting in keratoconus   copyContact lens fitting in keratoconus   copy
Contact lens fitting in keratoconus copy
kamal thakur
 
Polarized lenses
Polarized  lensesPolarized  lenses
Polarized lenses
kamal thakur
 
Fungal endophthalmatits
Fungal endophthalmatitsFungal endophthalmatits
Fungal endophthalmatits
kamal thakur
 

More from kamal thakur (6)

Sclera
ScleraSclera
Sclera
 
Glycolysis
Glycolysis Glycolysis
Glycolysis
 
ptosis
ptosisptosis
ptosis
 
Contact lens fitting in keratoconus copy
Contact lens fitting in keratoconus   copyContact lens fitting in keratoconus   copy
Contact lens fitting in keratoconus copy
 
Polarized lenses
Polarized  lensesPolarized  lenses
Polarized lenses
 
Fungal endophthalmatits
Fungal endophthalmatitsFungal endophthalmatits
Fungal endophthalmatits
 

Recently uploaded

Adversarial Attention Modeling for Multi-dimensional Emotion Regression.pdf
Adversarial Attention Modeling for Multi-dimensional Emotion Regression.pdfAdversarial Attention Modeling for Multi-dimensional Emotion Regression.pdf
Adversarial Attention Modeling for Multi-dimensional Emotion Regression.pdf
Po-Chuan Chen
 
The geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideasThe geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideas
GeoBlogs
 
678020731-Sumas-y-Restas-Para-Colorear.pdf
678020731-Sumas-y-Restas-Para-Colorear.pdf678020731-Sumas-y-Restas-Para-Colorear.pdf
678020731-Sumas-y-Restas-Para-Colorear.pdf
CarlosHernanMontoyab2
 
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
Levi Shapiro
 
Guidance_and_Counselling.pdf B.Ed. 4th Semester
Guidance_and_Counselling.pdf B.Ed. 4th SemesterGuidance_and_Counselling.pdf B.Ed. 4th Semester
Guidance_and_Counselling.pdf B.Ed. 4th Semester
Atul Kumar Singh
 
special B.ed 2nd year old paper_20240531.pdf
special B.ed 2nd year old paper_20240531.pdfspecial B.ed 2nd year old paper_20240531.pdf
special B.ed 2nd year old paper_20240531.pdf
Special education needs
 
Model Attribute Check Company Auto Property
Model Attribute  Check Company Auto PropertyModel Attribute  Check Company Auto Property
Model Attribute Check Company Auto Property
Celine George
 
Introduction to AI for Nonprofits with Tapp Network
Introduction to AI for Nonprofits with Tapp NetworkIntroduction to AI for Nonprofits with Tapp Network
Introduction to AI for Nonprofits with Tapp Network
TechSoup
 
Embracing GenAI - A Strategic Imperative
Embracing GenAI - A Strategic ImperativeEmbracing GenAI - A Strategic Imperative
Embracing GenAI - A Strategic Imperative
Peter Windle
 
Biological Screening of Herbal Drugs in detailed.
Biological Screening of Herbal Drugs in detailed.Biological Screening of Herbal Drugs in detailed.
Biological Screening of Herbal Drugs in detailed.
Ashokrao Mane college of Pharmacy Peth-Vadgaon
 
The Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official PublicationThe Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official Publication
Delapenabediema
 
Acetabularia Information For Class 9 .docx
Acetabularia Information For Class 9  .docxAcetabularia Information For Class 9  .docx
Acetabularia Information For Class 9 .docx
vaibhavrinwa19
 
How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...
Jisc
 
Unit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdfUnit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdf
Thiyagu K
 
Home assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdfHome assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdf
Tamralipta Mahavidyalaya
 
Honest Reviews of Tim Han LMA Course Program.pptx
Honest Reviews of Tim Han LMA Course Program.pptxHonest Reviews of Tim Han LMA Course Program.pptx
Honest Reviews of Tim Han LMA Course Program.pptx
timhan337
 
The Accursed House by Émile Gaboriau.pptx
The Accursed House by Émile Gaboriau.pptxThe Accursed House by Émile Gaboriau.pptx
The Accursed House by Émile Gaboriau.pptx
DhatriParmar
 
1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx
JosvitaDsouza2
 
Operation Blue Star - Saka Neela Tara
Operation Blue Star   -  Saka Neela TaraOperation Blue Star   -  Saka Neela Tara
Operation Blue Star - Saka Neela Tara
Balvir Singh
 
The Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdfThe Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdf
kaushalkr1407
 

Recently uploaded (20)

Adversarial Attention Modeling for Multi-dimensional Emotion Regression.pdf
Adversarial Attention Modeling for Multi-dimensional Emotion Regression.pdfAdversarial Attention Modeling for Multi-dimensional Emotion Regression.pdf
Adversarial Attention Modeling for Multi-dimensional Emotion Regression.pdf
 
The geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideasThe geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideas
 
678020731-Sumas-y-Restas-Para-Colorear.pdf
678020731-Sumas-y-Restas-Para-Colorear.pdf678020731-Sumas-y-Restas-Para-Colorear.pdf
678020731-Sumas-y-Restas-Para-Colorear.pdf
 
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
 
Guidance_and_Counselling.pdf B.Ed. 4th Semester
Guidance_and_Counselling.pdf B.Ed. 4th SemesterGuidance_and_Counselling.pdf B.Ed. 4th Semester
Guidance_and_Counselling.pdf B.Ed. 4th Semester
 
special B.ed 2nd year old paper_20240531.pdf
special B.ed 2nd year old paper_20240531.pdfspecial B.ed 2nd year old paper_20240531.pdf
special B.ed 2nd year old paper_20240531.pdf
 
Model Attribute Check Company Auto Property
Model Attribute  Check Company Auto PropertyModel Attribute  Check Company Auto Property
Model Attribute Check Company Auto Property
 
Introduction to AI for Nonprofits with Tapp Network
Introduction to AI for Nonprofits with Tapp NetworkIntroduction to AI for Nonprofits with Tapp Network
Introduction to AI for Nonprofits with Tapp Network
 
Embracing GenAI - A Strategic Imperative
Embracing GenAI - A Strategic ImperativeEmbracing GenAI - A Strategic Imperative
Embracing GenAI - A Strategic Imperative
 
Biological Screening of Herbal Drugs in detailed.
Biological Screening of Herbal Drugs in detailed.Biological Screening of Herbal Drugs in detailed.
Biological Screening of Herbal Drugs in detailed.
 
The Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official PublicationThe Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official Publication
 
Acetabularia Information For Class 9 .docx
Acetabularia Information For Class 9  .docxAcetabularia Information For Class 9  .docx
Acetabularia Information For Class 9 .docx
 
How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...
 
Unit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdfUnit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdf
 
Home assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdfHome assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdf
 
Honest Reviews of Tim Han LMA Course Program.pptx
Honest Reviews of Tim Han LMA Course Program.pptxHonest Reviews of Tim Han LMA Course Program.pptx
Honest Reviews of Tim Han LMA Course Program.pptx
 
The Accursed House by Émile Gaboriau.pptx
The Accursed House by Émile Gaboriau.pptxThe Accursed House by Émile Gaboriau.pptx
The Accursed House by Émile Gaboriau.pptx
 
1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx
 
Operation Blue Star - Saka Neela Tara
Operation Blue Star   -  Saka Neela TaraOperation Blue Star   -  Saka Neela Tara
Operation Blue Star - Saka Neela Tara
 
The Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdfThe Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdf
 

Anisometropia

  • 1. Kamal thakur 2nd year bsc opto Nethradhama college of opto
  • 2. Definition; Anisometropia is the condition in which the two eyes have unequal refractive power.
  • 3.  Congenital anisometropia; it occur due to differential growth of the eyeballs.  Acquired anisometropia; may occur due to uniocular aphakia after removal of crystalline lens or due to implantation of IOL of wrong power.
  • 4.  Absolute anisometropia; it is that condition in which the refractive power of two eyes is unequal.  Relative anisometropia; the total refraction of the two eyes can be equal, but the axial length may be different. This will lead to clear retinal image but a difference in the size of the retinal images.
  • 5.  Simple  Compound  Mixed  Simple astigmatic anisometropia  Compound astigmatic anisometropia  Mixed astigmatic anisometropia
  • 6. •Simple anisometropia; in this , one eye is normal and the other either myopic (simple myopic anisometropia) or hypermetropic (simple hypermetropic anisometropia).
  • 7. •Compound anisometropia; both eyes are either hypermetropic or myopic , but one eye is having higher refractive error than the other. •Mixed anisometropia; In this , one eye is myopic and the other is hypermetropic. This is also called antimetropia.
  • 8. • simple astigmatic anisometropia; when one eye is normal and the other has either simple myopic or hypermetropic astigmatism.
  • 9. •Compound astigmatic anisometropia; when the both eyes are astigmatic but of unequal degree.
  • 10. Three possibilities are there : 1. Binocular single vision is present in small degree of anisometropia . 2. Uniocular vision. When refractive error in one eye is of high degree. 3. Alternate vision occurs when one eye is hypermetropic and other myopic , then hypermetropic eye is used for distant vision and myopic for near.
  • 11. 1. Spectacles. The corrective spectacles can be tolerated up to maximum difference of 4D.After that diplopia may occurs. 2. Contact lenses are advised for higher degrees of anisometropia . 3. IOL implantation for uniocular aphakia. 4. Refractive corneal surgery for unilateral high myopia , astigmatism and hypermetropia.