Phacoemulsification refers to modern cataract surgery in which the eye's internal lens is emulsified with an ultrasonic handpiece and aspirated from the eye.

A cataract is a clouding of the lens in the eye leading to a decrease in vision.

Glaucoma is a term describing a group of ocular (eye) disorders that result in optic nerve damage.

The retina is the third and inner coat of the eye which is a light-sensitive layer of tissue.

Refractive eye surgery is any eye surgery used to improve the refractive state of the eye and decrease or eliminate dependency on glasses or contact lenses.