When I lay down in a almost dark room I see large round images on the wall and ceiling. This has gone on for a month or so. And once in a while there are no images. for the last two nights they have become much darker and now towards morning there are smaller images that are red. Although it seems that I see them with my eyes, if I cover one eye and then the other, one that is not my the image stays the same with my dominate eye an moves with the other. since what I am seeing is not with my eyes, they must be seeing images with my brain.
Person's Gender: Female
Person's Age: 83
made an appointment with my surgeon for next Monday
Hi. I'm online and happy to answer your question today.
Hi. It sounds like what you are experiencing is something called entoptic phenomenon.
These are images whose source is actually inside the eye itself. There are different manifestations of entoptical effects, depending on how they are generated. Blue field entoptic phenomenon looks like tiny bright dots, or bugs, moving along a wiggley racetrack. These are easier to see when looking at a uniformly lit area such as the blue sky, an illuminated wall in your home or a field of pure blue light. What you are actually seeing in this case are white blood cells racing through the capillaries in front of the macula, or central part, of your retina.
The Purkinje tree is another example of an entoptic phenomenon. This is an image of your blood vessels, located above the retinal photoreceptors, inside your eye. It is best seen by shining a small bright light against your closed eyelids, against your eyeball, or obliquely through your pupil, and wiggling the light quickly back and forth. You may have experienced this image when being examined by your ophthalmologist with the bright light she has on her head. You don't normally see this image as your retina is adapted to the shadow they cast however, when you shine the light from the side, the adaptation is defeated and you see the vessels.
They can also show up, as in your case, looking like blobs, circles, or spots of different colors. Red is very common.
This is not a sign of anything serious going on. That being said, I agree with your plan to see an ophthalmologist for a complete exam just to make sure everything else is OK.
Does this make sense to you?
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Ophthalmology since 1994 with Retina sub-specialty interest