Is this normal.?

[Santana222]

I just noticed recently when I close one of my eyes to read, the text appears to have depth, like this photo here:

https://www.safetysign.com/images/source/detail-grid-images/flat-blade-street-signs-featured.7d50397db30d0cca6ba23261d17c218f.jpg


It is not that exaggerated like the photo is, but I can see this (I don't know the English word for this effect) but it is slightly than the photo,  it is kind of funny when you jump a line the text you are focusing have an effect, kind of a button being pressed
I suggest people do this and post here,  just close one oeyef your eyez and try to read a text.

Also, another thing I noticed for ages is when I close one of my eyes, the opened eyes gets a slightly reddish area around the nose bridge region, I think The opened eye is seeing what the closed eye is seeing too?

[Santana222]

Thanks

[JohnHaganMD]

good luck

[JohnHaganMD]

True depth perception can only come from having both eyes open. However as with the illustration you posted there are ways of simulating depth in a flat plane or with one eye shut.  So for 99.99% of normal eyes the world flattens when one eye is closed.  As to your last paragraph, I don't have a clue.