Type of drug: The type of drug that a doctor uses to dilate the pupils will affect how long the eyes remain dilated.As a result, a child’s eyes may stay dilated for 24 hours or longer. Therefore, they require stronger drugs to dilate the pupils. Age: Younger children tend to have a very strong focus mechanism in the eye.Eye color: People with lighter colored eyes tend to experience the effects of eye dilation for longer than those with darker colored eyes.However, several different factors affect how long the eyes remain dilated. According to the American Association for Pediatric Ophthalmology and Strabismus, the average dilation lasts from 4 to 24 hours. The duration of eye dilation can vary widely. sensitivity to bright lights, such as sunlight.During this time, a person may experience the following effects of eye dilation: While the dilated eye exam may be over rather quickly, the dilation itself continues. This technique measures the pressure within the eye. Tonometry test: A special machine quickly puffs a small amount of air into the eye.This test assesses a person’s peripheral vision. Visual field test: The person holds their eyes still while reporting how well they can see objects in their periphery.The results indicate how clearly a person can see. Visual acuity test: The doctor asks the person to read letters up close and at a distance.This movement allows the doctor to check for problems with the muscles surrounding the eyes. Eye muscle function test: The doctor asks the person to follow a moving object with their eyes.Pupil response test: The doctor shines a small flashlight into the eyes to see how the pupils react to the light.The dilated eye exam may include a few additional tests, such as: However, people with blue or green eyes will experience dilation faster than people with brown eyes. According to the American Academy of Ophthalmology, eye dilation then takes effect within 20–30 minutes. The dilated eye exam is a medical exam that checks for eye conditions and diseases in their early stages.īefore the eye dilation test begins, the eye doctor - either an ophthalmologist or an optometrist - will administer the dilating eye drops. Ask your doctor if you have questions.Share on Pinterest During a dilated eye exam, a doctor may check how the pupils react to light. This helps the doctor see inside your eye.ĭepending on your needs, your doctor may include other tests too. Your doctor will give you some eye drops to dilate (widen) your pupil.
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