top of page
  • Doug Cook

Why Do Doctors Dilate Eyes?


Undilated pupils can limit the view inside


By making the pupil larger, we can see more

Dilation of the pupil refers to the technique of instilling eyedrops which temporarily make your pupils larger.  This gives your doctor an opportunity to see more of your retina when he looks into your eye to examine its health.  It’s a lot like looking into a keyhole to see what’s inside a room; the bigger the keyhole, the more you can see.

A commonly noticed effect of the drops is the temporary reduction in focusing ability to see things at near clearly.  For some younger patients this effect is an advantage to the doctor who can utilize it to determine a more accurate prescription for the patient.  The blurriness at near gradually reduces quickly and the ability to focus at near again should return within one hour.

Dilation begins to wear off in 1/2 hour and is near normal after 4 hours.  During this time, you may receive some special temporary sunglasses to wear to protect you from bright light.  Your vision examination is a lot more than just a test for glasses.  Exams with routine dilation of your eyes are more common now than in the past.  This helps assure that you receive the highest quality vision care that is available.

1 view0 comments

Recent Posts

See All

Causes of dark circles under the eyes

Most people believe that dark circles under the eyes are due to fatigue, lack of sleep or long hours of watching the computer/TV. Dark circles may be a sign of a health problem.  Some experts associat

Eye Medical versus Vision Visits to the Eye Doctor

An office visit with an eye care professional is simple and not complicated for most people with healthy eyes. When disease is present, the patient discovers limitations if they use a third party to h


bottom of page