Kanski Ophthalmology

1. ABNORMALITIES OF LENS SHAPE
2. Lenticonus
1. Coloboma
3. Small
lens

2. Coloboma
Coloboma of iris Coloboma of choroid Giant retinal tear
Ocular associations

3. Lenticonus
Posterior
• Posterior axial bulge
• Unilateral - usually sporadic
• Bilateral - familial or in Lowe
syndrome
Anterior
• Anterior axial bulge
• Associated with Alport syndrome

4. Small lens
• Small diameter • Small diameter and spherical
• May be familial (dominant)
Microphakia Microspherophaki
a
• Systemic association
- Lowe syndrome
• Systemic association
- Weill-Marchesani syndrome