A lens
coloboma is not a true
coloboma; it is just a zonular absence that causes a defect in the lens equator and hence a more spherical lens. It can be isolated or in association with iris, choroid or
retinal colobomas. Typically the defect is present at the site of the embryonic fissure, but it can be present elsewhere. This
congenital defect can cause
amblyopia, especially when it is associated with
cataract. We describe a case of a 39-year-old male with an atypical
coloboma that was managed successfully with
phacoemulsification, capsular tension ring and
intraocular lens implantation. Scheimpflug image analysis and full ophthalmological assessment were performed. Scheimpflug images demonstrated a notching of the lens equator and an absence of zonulae. During the
surgical procedure an ophthalmic viscosurgical device was used to tamponade the vitreous, and after continuous curvilinear
capsulorhexis the capsular tension ring was inserted to allow the surgeon to perform a safe
phacoemulsification.