The four most common vision tests are visual acuity tests, refraction, visual field tests, and colour vision tests.
Visual acuity (sharpness) tests are used:
Visual acuity tests are done as part of routine examinations. You may also have this test when you get your driver's licence or apply for some types of jobs.
Refraction is done:
Visual field tests are used:
Colour vision tests are used:
Colour vision is often tested as part of a routine examination. You may also have this test when you apply for a job where recognizing different colours is important, such as truck driving, electronics, or the military.
Visual acuity test
Visual field tests
Colour vision test
You shouldn't feel any discomfort during these tests.
You may get eyedrops to widen (dilate) your pupils. The eyedrops take 15 to 20 minutes to work. These eyedrops may sting a little and cause a medicine taste in your mouth. And they can make it hard to focus for the rest of the day. They also make your eyes very sensitive to light, so you'll need sunglasses outside.
Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor or nurse call line if you are having problems. It's also a good idea to know your test results and keep a list of the medicines you take.
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Current as of: March 3, 2017
Adam Husney, MD - Family Medicine
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