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Located in Clearlake, on Old HWY 53

Call (707) 994-8641 or Request Your Appointment

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Home » Eye Care Services » Visual Field Testing

Visual Field Testing

A visual field test measures how much 'side' vision you have. It is a straightforward test, painless, and does not involve eye drops. Essentially lights are flashed on, and you have to press a button whenever you see the light. Your head is kept still and you have to place your chin on a chin rest. The lights are bright or dim at different stages of the test. Some of the flashes are purely to check you are concentrating.
 
Each eye is tested separately and the entire test takes 15-45 minutes. Your optometrist may ask only for a driving licence visual field test, which takes 5-10 minutes. If you have just asked for a driving test or the clinic doctor advised you have one, you will be informed of the result by the clinic doctor, in writing, in a few weeks. 
 
Normally the test is carried out by a computerised machine, called a Humphrey. Occasionally the manual test has to be used, a Goldman. For each test you have to look at a central point then press a buzzer each time you see the light.  

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We have returned for Essential services to begin to get back into new policies and protections.

Please note if you DO have an upcoming appointment, you will be required to wear a mask, and come to your visit alone unless a caregiver is needed for physical assistance, then the caregiver must return when your visit is over.

Any repairs/dispensing of eyewear/RX fills all require an appointment now.

I hope everyone is doing well and staying healthy and we are doing our part to keep our staff and patients safe!!