Ophthalmoscopy is a test that allows a doctor to see inside the
back of the eye (called the fundus) and other structures using a
magnifying instrument (ophthalmoscope) and a light source. It is
done as part of an eye exam and may be done as part of a routine
physical exam. The fundus contains a lining of nerve cells (the
retina), which detects images seen by the clear, outer covering
of the eye (cornea). The fundus also contains blood vessels and
the optic nerve. See a picture of the structures of the eye.
There are two types of ophthalmoscopy. Why It Is Done
Ophthalmoscopy is done to: How To Prepare No special preparation
is needed before having this test. Your doctor may use eyedrops
to widen (dilate) your pupils. This makes it easier to see the
back of the eye. The eyedrops take about 15 to 20 minutes to
dilate the pupil fully. Your doctor may also use eyedrops to
numb the surface of your eyes. Tell your doctor if: You may have
trouble focusing your eyes for several hours after the test. You
may wish to ar