ophthalmology.Diseases of the lens.(dr.baxtyar)

Diseases of the crystalline lens By Dr. Bakhtiar Q. Hamasalh Jaf M.B.Ch.B , M.D-OPHTHALMOLOGY University of Suleimani-college of medicine

ANATOMY ,[object Object],[object Object],[object Object]

Structure of the lens : ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],N N C

Diseases of the lens : ,[object Object],[object Object],[object Object],[object Object]

Parallax ,[object Object],[object Object],[object Object],[object Object]

Opacity in lens ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Anatomical classification of cataract 1. Sub capsular ,[object Object],[object Object],2. Nuclear 3. Cortical 4. Christmas tree

Age related cataract ,[object Object],[object Object],[object Object],[object Object],[object Object]

Symptoms : ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object]

Signs: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

COMPARISION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Nuclear cataract ,[object Object],[object Object],[object Object],[object Object],[object Object],Progression

Cortical cataract Initially vacuoles and clefts Progressive radial spoke-like opacities Progression

Subcapsular cataract Anterior Posterior

Christmas tree cataract Polychromatic, needle-like opacities May co-exist with other opacities

Posterior sub capsular cataract. ,[object Object]

Classification according to maturity Immature Mature Hypermature Morgagnian

Complications of hypermature cataract: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Congenital cataracts: Bilateral ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Genetic origin : ,[object Object]

Systemic association ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object]

Congenital (developmental) cataract:- ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Congenital or developmental: ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Evaluation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The visually significant cataract ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

MANAGEMENT OF DEVELOPMENTAL CATARACT : ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Considerations regarding surgery ,[object Object],[object Object],[object Object],[object Object]

Postoperative considerations ,[object Object],[object Object],[object Object],[object Object],[object Object]

METABOLIC CATARACT: ,[object Object],[object Object]

diabetic cataract - Juvenile ,[object Object],[object Object],[object Object],Adult ,[object Object],[object Object],[object Object],[object Object]

TRAUMATIC CATARACT ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Causes of traumatic cataract Penetration Concussion ‘ Vossius’ ring from imprinting of iris pigment Flower-shaped ,[object Object],[object Object],[object Object],Other causes

Other causes: - myotonic dystrophy ,[object Object],[object Object],[object Object],[object Object],[object Object]

Other causes: - atopic dermatitis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Complicated Cataract: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Complicated Cataract: Clinical features ,[object Object],[object Object],[object Object],[object Object],[object Object]

complicated cataract ,[object Object],[object Object],Posterior subcapsular ,[object Object],[object Object],[object Object],Glaukomflecken ,[object Object],[object Object]

Treatment: ,[object Object],[object Object],[object Object]

Drugs Chlorpromazine ,[object Object],Other drugs ,[object Object],[object Object],- initially posterior subcapsular Systemic or topical steroids - central, anterior capsular granules

Extracapsular cataract extraction 1. Anterior capsulotomy 2. Completion of incision 3. Expression of nucleus 4. Cortical cleanup 6. Polishing of posterior capsule, if appropriate 5. Care not to aspirate posterior capsule accidentally

8. Grasping of IOL and coating with viscoelastic substance Extracapsular cataract extraction ( cont. ) 7. Injection of viscoelastic substance 9. Insertion of inferior haptic and optic 11. Placement of haptics into capsular bag 10. Insertion of superior haptic 12. Dialling of IOL into horizontal position and not into ciliary sulcus

Phacoemulsification 1. Capsulorrhexis 2. Hydrodissection 3. Sculpting of nucleus 4. Cracking of nucleus 5. Emulsification of each quadrant 6. Cortical cleanup and insertion of IOL

Posterior capsular opacification (after cataract or secondary cataract) ,[object Object],[object Object],[object Object],[object Object]

Treatment ; ,[object Object],[object Object],[object Object],[object Object],[object Object]

Subluxation and dislocation of lens: ,[object Object],[object Object],[object Object],[object Object]

Etiology: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object]

ectopia lentis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Complications: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Dislocation of the Lens (Ectopia Lentis) ,[object Object]

ophthalmology.Diseases of the lens.(dr.baxtyar)

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