Cataract Slide .pptx
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short presentation discus the diseases of Human crystalline lens for undergraduate medical students
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Cataract Slide .pptx
- 1. Slide Cataract A s s i s t a n t l e c t u re r , O p h t h a l m o l o g y d e p a r t m e n t Fa c u l t y o f m e d i c i n e , U n i v e rs i t y o f B e n g h a z i Lens &
- 2. First time lens removed by suction through a instrument was described by the 10th century Muhammad ibn Zakariya al-Razi History of 2630 BC 1750 BC Cataract surgery
- 3. In 1967, Charles D Kelman introduced the idea of phacoemulsification by Ultrasound for cataract treatment. History of In 1747 that the first successful lens extraction was performed by Jacques Daviel. In 1949 first successful implant of an artificial lens in London, England by Harold Ridley Cataract surgery
- 4. Types of cataract Congenital cataract Pre-op evaluation Type of Operations Post-op Complications 5 4 3 2 1 By the end of this presentation we must able to know the following :
- 5. 1 How cataract Normally In cataract DECREASE VISUAL ACUITY 2 GLARE
- 6. Glare Define of visual acuity in bright lighting
- 8. Acquired cataract Age related Secondary PSC Nuclear Cortical Systemic diseases Snowflakes Christmas tree Ocular disease Uveitic Shield like 2ry to ACG Myopia , RP Traumatic
- 9. IS there another Causes of cataract Electric shock Steroid “PSC” Long-acting miotics ( Pilocarpin) Chlorpromazine”ASC” Medications Ionizing radiation
- 10. “Senile” Cataract Age related 1ST Anatomy of normal crystalline lens. 2nd classify cataract according to anatomy. Anterior capsule Cortex Nucleus Posterior capsule Anterior subcapsular Posterior subcapsular Cortical Nuclear
- 11. “Senile” Cataract Age related Cortex Nucleus Anterior capsule Posterior capsule
- 12. Early Nuclear cataract Moderate ( brown ) Nuclear cataract Cataract Nuclear
- 14. P. Subcapsular cataract P. Subcapsular cataract retro-illumination Cataract Posterior subcapsular
- 16. Systemic diseases Snowflakes cataract in DM Christmass tree cataract in Myotonic dystrophy
- 17. Systemic diseases Shield-like anterior subcapsular cataract in atopic dermatitis
- 18. Ocular diseases “complicated cataract ” Early Uveitic posterior subcapsular cataract Uveitic anterior plaque opacities
- 19. 2ry cataract to angle closure glaucoma (glaukomflecken ) anterior subcapsular cataract in retinitis pigmentosa Ocular diseases “complicated cataract ”
- 20. Cataract Traumatic Blunt trauma Ionizing radiation Electric shock
- 21. Rosette ( cataract ) Blunt Cataract Traumatic Infrared ( cataract )
- 22. according to maturity Classification of Cataract Immature Mature
- 23. according to maturity Classification of Cataract Hypermature (intumescent) Hypermature Morgagnian
- 25. Lens cortical fibers Liquifications of cortical fiber cataract Morgagnian
- 26. +ve Iris shaddow -ve Iris shaddow Mature and Immature How to differentiate between
- 30. +ve Iris shaddow -ve Iris shaddow Mature and Immature How to differentiate between
- 31. Mature and Immature How to differentiate between Mature VA Is reduced to HM,PL Iris shadow is NOT present No fundus details 3 2 1 Immature VA Is reduced to CF Iris shadow is present Fundus may be visible 3 2 1
- 32. Congenital cataract Blue dot Nuclear lamellar Oil droplet Posterior polar Sutral
- 33. Congenital cataract Blue dot Nuclear lamellar Oil droplet Posterior polar Sutral
- 34. Congenital cataract Blue dot Nuclear lamellar Oil droplet Posterior polar Sutral
- 35. Congenital cataract Blue dot Nuclear lamellar Oil droplet Posterior polar Sutral
- 36. Congenital cataract Blue dot Nuclear lamellar Oil droplet Posterior polar Sutral
- 37. Congenital cataract Blue dot Nuclear lamellar Oil droplet Posterior polar Sutral
- 38. ECTOPI A LENTIS Subluxation Ectopia lentis et pupillae Subluxation
- 40. ECTOPIA LENTIS Inferior nasal subluxation in homocystinuria Superior temporal subluxation in marfan syndrome
- 41. ECTOPI A LENTIS Subluxation Microspherophakia in Weill–Marchesani syndrome
- 42. Lentoconus Anterior lenticonus Posterior lenticonus
- 43. Evaluation Cataract Case DDx of Gradual loss of vision Refractive error Cataract Corneal degenerations Corneal ectasia, dystrophies Glaucoma . Retinal vascular diseases such as DM , HTN
- 44. History Detailed VA Visual Acuity Refraction Subjective Slit lamp Detailed Management Cataract Case
- 46. 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.7 0.6 0.5 0.4 0.3 0.2 0.1 BCVA UAVA 6/6 6/24 VA & Refraction UAVA - BCVA Management Cataract Case
- 47. Importance of visual acuity is to deciding Management Cataract Case The visual need for surgery !
- 48. Slit lamp Detailed Management Cataract Case Eye lid Conjunctiva Cornea Anterior chamber Iris Cataract Grading
- 49. EXAMINATIONS Management Cataract Case Is there another important
- 52. Management Cataract Case Biometry IOL power calculation Axial length (mm) Average keratometric reading
- 53. Management Cataract Case Axial length measured by A Scan ultrasound
- 54. Management Cataract Case keratometric reading measured by Auto kerato Refracto Meter
- 55. IOL Intra ocular lens Management Cataract Case Posterior chamber IOL Anterior chamber IOL
- 56. IOL Intra ocular lens Management Cataract Case Posterior chamber IOL Anterior chamber IOL
- 57. Pseudophakia Management Cataract Case What are the signs to differentiate between Aphakia &
- 61. ECCE
- 64. PCO or After cataract PCO Retro illumination Complications Post operative
- 66. Capsulotomy YAG laser Complications Post operative
- 67. Acute onset enophthalmitis Delayed onset enophthalmitis Complications Post operative
- 68. Decentered with anterior dislocation of IOL Inferior subluxation of IOL Complications Post operative
- 69. Iris prolapse Treatment Excise prolapsed iris tissue Resuture incision Complications Post operative
- 70. Cystoid macular oedema Corneal decompensation Retinal detachment Complications Post operative
- 71. M o h a m e d For your attention E l b a r g h a t h i Thanks