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You are here : AllRefer.com > Health > Tests & Exams > Slit-lamp exam

Slit-lamp exam

Alternate Names : Biomicroscopy

Definition

The slit-lamp examination looks at structures that are at the front of the eye.

Why is the Test Performed?

The test is used to examine the eyelids, the sclera, conjunctiva, iris, lens, and the cornea.

How is the Test Performed?

The slit-lamp is a low-power microscope combined with a high-intensity light source that can be focused to shine in a thin beam.

You will sit in a chair with the instrument placed in front of you. You will be asked to rest your chin and forehead on a support to keep your head steady.

The health care provider will examine your eyes and may touch a fine strip of paper stained with an orange-colored dye (fluorescein) to the side of your eye. The dye stains the tear film on the surface of the eye to help with the examination. The dye rinses out of the eye with tears.

After this examination, drops may be placed in your eyes to dilate the pupils. The drops take about 15 to 20 minutes to work. The examination is then repeated, allowing the back of the eye to be examined.

How to Prepare for the Test?

No special preparation is necessary for this test.

How will the Test Feel?

Your eyes will be sensitive to light for a few hours after the exam if dilating drops are used.

Pictures & Images

Eye
Eye

Slit-lamp exam
Slit-lamp exam

Eye lens anatomy
Eye lens anatomy

   
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Review Date : 1/21/2009
Reviewed By : Paul B. Griggs, MD, Department of Ophthalmology, Virginia Mason Medical Center, Seattle, WA . Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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