Diagnosing Cataract

The eye doctor will place drops in your eyes to dilate your pupils and perform a thorough eye exam. He or she will study the crystalline lens of your eye and check the optic nerves and retina for changes that may be contributing to your vision problems.

This is typically done with an ophthalmoscope, which is a handheld tool used to look inside the eye. Using an instrument called a slit lamp, your eye doctor can identify the location of the cataract and determine its severity. The eye doctormay also perform a tonometry test in order to measure the pressure inside your eye. This is one of the diagnostic tools for glaucoma.