A 55-year-old-man developed cataract in the shape of a star after suffering a blow in the eye.

The man was treated using a procedure, phacoemulsification, which uses ultra sound waves to break up the opaque part and vacuum to remove the debris. The lense was then replaced with an artificial one.
The eye is very susceptible to develop cataract when hit forcefully by some object.
Source-Medindia