What to Know About Blind Spots

What are blind spots?

Blind spots, also known as scotomas, are areas of the visual field where you cannot see anything. Most people have two small blind spots, one in each eye. These blind spots are caused by the optic disc, which is the area where the optic nerve leaves the eye. The optic disc does not have any rods or cones, the cells that are responsible for detecting light, so we cannot see anything in that area.

How big are blind spots?

The size of blind spots varies from person to person. On average, they are about the size of a pinhead held at arm's length.

Where are blind spots located?

Blind spots are located just below and to the nasal side (the side towards the nose) of the center of the visual field.

Can blind spots cause problems?

In most cases, blind spots do not cause any problems. However, they can sometimes interfere with activities that require good central vision, such as reading, driving, or doing detailed work. If you have concerns about your blind spots, talk to your eye doctor.

Are blind spots a sign of a medical problem?

In most cases, blind spots are not a sign of a medical problem. However, they can sometimes be a symptom of an underlying health condition, such as glaucoma, retinal detachment, or optic nerve damage. If you experience a sudden change in your vision or notice that your blind spots are getting larger, it is important to see your eye doctor right away.

How are blind spots treated?

Blind spots cannot be treated directly. However, if they are caused by an underlying medical condition, treating the condition may improve your vision. Talk to your eye doctor about the best treatment options for you.