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Contact Lens Fees. What Drops Do to Your Eyes Dilating eyedrops called mydriatics are used to dilate, or enlarge, the pupils of your eyes so that your eye doctor can see the inside of your eye in detail.
Dilating drops work in one of three ways: By temporarily paralyzing the muscle that makes the pupil smaller; By stimulating the muscle that makes the iris the colored part of the eye widen; or By preventing the pupil from adjusting for focus called accommodation. The retina itself also can be seen, as well as the optic nerve, which sends signals from the retina to your brain where they are interpreted as images. In addition to exams, dilating eyedrops are used for a variety of purposes.
Your pupils are the round, black openings at the center of your iris the colored part of your eye. Your iris opens and closes the pupil to allow more or less light into the eye. For your eye doctor to look inside your eyes, your pupils must be dilated widened.
Dilating eye drops enlarge your pupils and keep them from getting smaller when the doctor shines light in your eyes. Your eye doctor will put a small amount of dilating eye drops into each of your eyes. It usually takes about 20 to 30 minutes for your pupils to fully open.
Light-colored eyes such as blue, green or hazel will dilate faster than brown eyes. While your eyes are dilated, your vision will be blurry. You will have trouble focusing on close objects. You also will be extra sensitive to bright light. Macular Degeneration Two very common retinal diseases, diabetic retinopathy and age-related macular degeneration AMD , are diagnosed and monitored by examining the retina through a dilated pupil. Other Conditions In addition to macular degeneration and glaucoma, there are many other conditions that require pupil dilation, such as detection of a retinal tear or detachment, or an ocular tumor, just to name a few.
The National Eye Institute generally recommends that starting at age 60 everyone should have an annual, comprehensive, dilated eye examination. If you are African-American, the recommended age of having a dilated eye exam is 40 years old, because of the higher risk of glaucoma.
The American Academy of Ophthalmology has specific recommendations for diabetic patients. It is recommended that Type 1 diabetics have their first eye exam within five years of diagnosis. Type 2 diabetics, should have their eye exam at the time of diagnosis. If you are a diabetic woman considering pregnancy, it is recommended to have an exam prior to conception or early in the first trimester.
Summary As part of a comprehensive eye examination, pupil dilation is very important at revealing the status of your optic nerve and retina, and is critical to preventing and treating eye conditions that could potentially lead to vision loss. About the author. Yvonne Ou, MD. Full bio. Help find a cure. Donate Now. Stay in touch. Receive Glaucoma research updates and inspiring stories. First Name. Last Name.
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