Seeing flashes when adapting to the dark



Submitted by thinhhoang on Tue, 07/30/2019 - 12:42
Did you perform any surgery for the eyes?
Do you suffer from pre-existing illnesses in the eye?

Intraocular pressure raised once spontaneously, treated for a week, returned to baseline normal and steady since. Got vitreous floaters shortly after.

Do you suffer from any diseases in the body?
Do you use any eye drops?

Natri hyaluronate

Do you use any eye drops?





Last night when I turned off the light, I saw a couple of flashes when I flicked my eyes around (both eyes).

I had some vitreous floaters in my eyes since November last year and has got them checked with various ophthalmologists since. The last time I got them checked was last Wednesday.

The flashes seemed to stop when my eyes had fully adapted to the dark, but I still get worried if this is a sign of a torn retina.

I feel normal, the amount of floaters remains roughly the same. I would like to get a second opinion on this issue.

Many thanks for your help. I attach my Ultrasound B scan last Wednesday 24th July.



Thanks for your Question

Having eye floaters means there is some sort of posterior vitreous detachment. Vitreous is attached to the retina and for many reasons,  vitreous will be separated from the retina either partially or completed. This separated is called posterior vitreous detachment.

When you flick your eye or move them suddenly from on side to another, the detached vitreous will stimulate retina which causing you to see flashes of lights which is completely normal.

Your B-Scan is completely normal.

I am actually curious about the previous attack of high intraocular pressure that you had before. What was the cause of it?



Right B-Scan
Left B-Scan.jpg


Default User Picture


Thank you very much for your reply Doctor.

I have consulted many but my ophthalmologists weren't sure what was the cause, some attributed to some uveitic condition which resolved spontaneously.

Once again thank you very much.

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