What is the blue light you see when you press above your eyelid?


And importantly, is it unhealthy for your eyes to do this?

I’m talking about when you press above your eyelid but still inside the eye socket, there is a blue circle on the bottom of your vision that follows the direction of your eye.

In: Biology

These are called phosphenes. Basically, you are putting pressure on the retina in your eye. When you put pressure on the retina, it makes your brain think you are seeing light, when in reality it is just a stimulus triggered by your finger.