There are two categories of patients requiring ocular prosthesis:

First one is those patient who have lost vision of one of their eyes by the reason of any disease and the eye looks unpleasant because it has developed whiteness all over cornea (total corneal opacity).

The size of affected eye is the same or slightly smaller than the sound eye and medically it is not required to remove the eyeball.

In that case cosmetic shell (scleral shell) is fitted over the eyeball.

Second one is those whose eye ball has been removed surgically. In such case the movement of eyeball is absolutely absent unless a motility implant has been placed in the conjunctive at the time operation.

Here artificial eye is fitted which is made by after taking impression so that it have some thickness.

Phthisis bulbi (shrunken or small eye ball)

Anophthalmos (Eye remove after surgery)