Twice now upon waking up I have been met by a very strange sight. My vision has ghosted as I look around, so I see several layers of images - like a photo with extremely long exposure. It has cleared after I blinked a few times, but it is a very strange sensation and I am a little worried.
I have very dry eyes which have always caused blurry vision in the morning, but this is different to that. I have mildish diplopia and have a reading glasses prescription for prism +1.5 in both eyes, though I never filled it and don't wear glasses. Both times I have seen this, I woke up early or went to bed late, so I guess I was pretty tired. I also have anxiety which causes some weird stuff, but I don't see how it would cause this.
I'm a young adult and was at the optometrist only a few months ago, who did the photo of the back of the eye (it's standard here, I don't know if it is in other places). Other than a tiny mole which has been there for years, there wasn't anything out of the ordinary.
I should add that I don't have any other symptoms and feel fine otherwise, except that my eyes feel rather strained this morning. Could the weird vision be cause for concern, or am I worrying unnecessarily? It's only in the morning, and clears quickly, but it's still not normal. Has anyone else experienced this? Could dry eyes, tiredness, and/or diplopia be the cause?
Many thanks all.