10 doctors weighed in:

If I press my closed eyelid with my finger, I see a faint blue dot in the darkness. What's that called?

10 doctors weighed in
Dr. Andrew Shatz
Ophthalmology
6 doctors agree

In brief: Phosphenes

Pushing on the eye puts indirect pressure on the retina.
This stimulation causes the retina to give off the only signal it knows - light sensation. The ring of light caused by the finger is called a phosphene. Repeated pressure on the eye can be harmful, so beware.

In brief: Phosphenes

Pushing on the eye puts indirect pressure on the retina.
This stimulation causes the retina to give off the only signal it knows - light sensation. The ring of light caused by the finger is called a phosphene. Repeated pressure on the eye can be harmful, so beware.
Dr. Andrew Shatz
Dr. Andrew Shatz
Thank
Dr. Gary Wortz
Ophthalmology
2 doctors agree

In brief: Retinal photopsia

This is called a retinal photopsia.
When you press on the eye, especially on the extreme outer edges, you are able to put pressure on the retina. This irritates the retina and causing it to discharge electrical impulses. These impulses are interpreted by brain as 'flashes, or a blue dot. You can actually move the dot based on where you touch your eye. In this situation it's a normal phenomenon.

In brief: Retinal photopsia

This is called a retinal photopsia.
When you press on the eye, especially on the extreme outer edges, you are able to put pressure on the retina. This irritates the retina and causing it to discharge electrical impulses. These impulses are interpreted by brain as 'flashes, or a blue dot. You can actually move the dot based on where you touch your eye. In this situation it's a normal phenomenon.
Dr. Gary Wortz
Dr. Gary Wortz
Thank
Get help from a real doctor now
Dr. William Forsythe
Board Certified, Emergency Medicine
23 years in practice
171K people helped
Continue
108,000 doctors available
Read more answers from doctors