Indirect ophthalmoscopy is a more difficult procedure and requires greater skill and more specialized equipment than direct ophthalmoscopy, so it is generally done by ophthalmologists and optometrists.
Indirect ophthalmoscopy has several advantages over direct ophthalmoscopy:
It allows better visualization of the inside of the eye when a cataract is present.
It provides a three-dimensional (3-D) view of the back of the eye, allowing a more detailed view of certain eye conditions (such as growths, optic nerve swelling, or retinal detachment).
It allows a wider view of the back of the eye.
If your doctor suspects a problem with the blood vessels in your eye, a test called eye angiography may be done. This test uses fluorescein dye and a camera to photograph blood vessels in the eye. To learn more, see the topic Eye Angiogram.