Our office is OPEN for all services.
Due to the Coronavirus, we have procedures in place to keep you and our staff safe. We ask that all patients and staff wear masks, adhere to social distancing while in the office, and prepare for your exam by sending a copy of your insurance card and driver’s license before arrival. We are following a strict cleaning and disinfecting program and wearing masks.

You may order your contact lenses online for direct ship to your home by clicking HERE or text us @ 810-209-8855). You may also try on frames virtually before your appointment and have a list of frames that interest you ready to SEE @ your appointment.

We hope you stay healthy and safe.

From all of us at DELTAVISION OPTICAL CENTER and Dr. MARY ESPY

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Visual Field Testing

Deltavision Optical Center uses Visual Field Testing to assess your visual field health.

A visual field test measures the range of your peripheral or “side” vision to assess whether you have any blind spots (scotomas), peripheral vision loss or visual field abnormalities. It is a straightforward and painless test that does not involve eye drops but does involve the patient’s ability to understand and follow instructions.

 

Infographic of Visual field testing

An initial visual field screening can be carried out by the doctor asking you to keep your gaze fixed on a central object, covering one eye and having you describe what you see at the periphery of your field of view. For a more comprehensive assessment, special equipment might be used to test your visual field. In one such test, you place your chin on a chin rest and look ahead. Lights are flashed on, and you have to press a button whenever you see the light. The lights are bright or dim at different stages of the test. Some of the flashes are purely to check your concentration. Each eye is tested separately and the entire test takes 10-30 minutes. These machines can create a computerized map of your visual field to identify if and where you have any deficiencies. Dr. Espy has diagnosed brain tumors and strokes with the use of this technology. She also uses the visual field to monitor glaucoma.Infographic of Visual field testing