Eye Test

Eye tests at Hornstein Eyecare usually last about half an hour. During your examination your optometrist may perform some of the following tests. If you wish to know more about your eye exam, please ask the Optometrist.

Non-contact tonometer

This test helps diagnose glaucoma. It blows a tiny puff of air, measuring eye pressure indirectly by the eye's resistance to the puff.


This can approximate your prescription by measuring how light is affected as it reflects through the eye. It is quick and provides a baseline for the optometrist to determine your prescription.

Visual acuity testing

The familiar eye test chart. Each eye is covered in turn and you read the letters aloud, from top to bottom. This shows how clearly each eye can see.  You then wear a trial frame, which is like a pair of glasses without any lenses. The optometrist will try different lenses in the frame to see if it improves your vision.


This is used to examine your retina: the light-sensitive tissue inside your eye. Certain conditions show changes in the retina, allowing early detection of, for example, diabetes.

Digital retinal photography

The early stages of retinal damage may not necessarily result in immediate and noticeable changes in vision. Retinal imaging uses high-resolution imaging systems to take pictures of the inside of your eye as a general health check or to detect and monitor for signs of glaucoma, blood pressure, diabetes, macular degeneration, retinal tears, or many other conditions.

Slit lamp

A microscope and a small beam of light are used to closely examine the areas at the front of your eye, including the cornea, eyelids, iris and lens, in greater detail.