Not trying to offend anyone, and I can think of plenty of Caucasians with almond shaped or squinty eyes, but when I came across this picture, I wondered: can she really see exactly the same (same field of vision) as a roundeye? Are there any significant limitations that this would place on someone’s ability to drive, etc.? (N.B. that I concede the picture I link to is somewhat unfairly atypical because the big smile is probably scrunching her cheeks upward more than they’d normally be).
The eye is still mobile, and light only comes in through the pupil (which is relatively small in relation to the entire eye). I really don’t see how it’d make a difference.
I’m not sure about almond-shaped eyes, but I do know that droopy upper eyelids can impair vision enough that ophthalmologists recommend surgery due to the resulting vision impairment. (Someone posted here about that in the last couple days or so.)
To be able to tell for this case, what you really want is a look at how much pupil is exposed. If it’s fully exposed I don’t see that the lids would cause much trouble at all. (Maybe a little upper/lower peripheral limitation but not a whole lot, I suspect.)
The problem might be inability to look up or down, without moving the head.
That’s kind of what I thought looking at that girl – tunnel vision? I seem to recall having hives from some allergic reaction and at least feeling like my field of vision was restricted from my swollen face scrunching my eyes up.