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How does the ophthalmoscope test reveal the correctness of your eyesight?

An ophthalmoscope is a test that allows the doctor to see the back of the eye, which is called the fundus of the eye. It is also performed as part of a routine physical examination. Through the "Reassure Yourself" series, we learn about the importance of ophthalmoscopy and what this test reveals about the health of the eyes, according to "healthlinkbc".

The fundus contains a lining of nerve cells called the retina. The retina detects the images that the transparent outer covering of the eye, called the cornea, sees. The fundus also contains blood vessels and the optic nerve.

There are two types of ophthalmoscopes:

Direct ophthalmoscope: Your doctor uses an instrument the size of a small flashlight. It has several lenses that can magnify up to about 15 times.

Indirect ophthalmoscope: Your doctor uses a small hand-held lens and either a slit-lamp microscope or a light attached to a headband. This test gives the doctor a wider view of the inside of the eye that allows the fundus to be seen better, even if the lens is dark due to cataracts.

Why does the doctor use ophthalmoscopes?


An ophthalmoscope is performed to:

Discovering eye problems or diseases, such as retina problems.

Find other conditions or diseases that harm the eye.

Find the cause of your symptoms, such as a headache.

Discovering other problems or diseases, such as head injuries or brain tumors.

Ophthalmoscope results


Natural results in which all structures inside the eye appear normal.

Abnormal results include

Retinal detachment.

A swelling of the optic nerve is found (papilledema).

Damage to the optic nerve caused by glaucoma.

Changes in the retina of the eye (such as the white, solid deposits under the retina called keloid or broken blood vessels called hemorrhage) to macular degeneration.

Damage to blood vessels or bleeding in the back of the eye. This can happen due to diseases such as high blood pressure or diabetes.

Detection of cataracts.