ABNORMALITIES OF LENS SHAPE

2. Lenticonus

1. Coloboma

3. Small lens

Coloboma

Coloboma of iris Coloboma of choroid Giant retinal tear

Ocular associations

LenticonusPosterior

• Posterior axial bulge• Unilateral - usually sporadic• Bilateral - familial or in Lowe syndrome

Anterior

• Anterior axial bulge

• Associated with Alport syndrome

Small lens

• Small diameter • Small diameter and spherical• May be familial (dominant)

Microphakia Microspherophakia

• Systemic association - Lowe syndrome

• Systemic association - Weill-Marchesani syndrome