LAB TEST
Ophthalmoscopy
Ophthalmoscopy is an examination of the back part of the eye (fundus), which includes the retina , optic disc, choroid , and blood vessels.
How the Test is Performed
There are different types of ophthalmoscopy. Direct ophthalmoscopy . You will be seated in a darkened room. The health care provider performs this exam by shining a beam of light through the pupil using an instrument called an ophthalmoscope. An ophthalmoscope is about the size of a flashlight. It has a light and…
How to Prepare for the Test
Indirect ophthalmoscopy and slit-lamp ophthalmoscopy are often performed after eyedrops are placed to widen (dilate) the pupils. Direct ophthalmoscopy and slit-lamp ophthalmoscopy can be performed with or without the pupil dilated. You should tell your provider if you: Are allergic to any medicines Are taking any…
How the Test will Feel
The bright light will be uncomfortable, but the test is not painful. You may briefly see images after the light shines in your eyes. The light is brighter with indirect ophthalmoscopy, so the sensation of seeing after-images may be greater. Pressure on the eye during indirect ophthalmoscopy may be slightly…
Why the Test is Performed
Ophthalmoscopy may be done as part of a routine physical but is always part of a complete eye examination. It is used to detect and evaluate symptoms of retinal detachment or eye diseases such as glaucoma. Ophthalmoscopy may also be done if you have signs or symptoms of high blood pressure, diabetes, or other diseases…
Normal Results
The retina, blood vessels, and the optic disc appear normal.
What Abnormal Results Mean
Abnormal results may be seen on ophthalmoscopy with any of the following conditions: Viral inflammation of the retina ( CMV retinitis ) Diabetes Glaucoma High blood pressure Loss of sharp, central vision due to age-related macular degeneration Melanoma of the eye Optic nerve problems Separation of the retina in the…
Risks
If you receive drops to dilate your eyes for the ophthalmoscopy, your vision will be blurred. Wear sunglasses to protect your eyes from sunlight, which can damage your eyes. Have someone drive you home. The drops usually wear off in several hours. The test itself involves no risk. In rare cases, the dilating eyedrops…
References
Atebara NH, Miller D, Thall EH, Brodie SE. Ophthalmic instruments. In: Yanoff M, Duker JS, eds. Ophthalmology . 6th ed. Philadelphia, PA: Elsevier; 2023:chap 2.5. Ball JW, Dains JE, Flynn JA, Solomon BS, Stewart RW. Eyes. In: Ball JW, Dains JE, Flynn JA, Solomon BS, Stewart RW, eds. Seidel's Guide to Physical…
This is a summary. Read the full article at www.ucsfbenioffchildrens.org (reviewed 12/02/2023).
This page is general information and is not medical advice. It does not replace a registered doctor, and it is not a prescription or a recommendation to use any medicine or test. Prices are listed prices and may change. Always follow the advice of your doctor or pharmacist.