Does your peripheral vision shrink when your tired?

Answer 1

No. Pupil size and the placement of the retina and the placement and concentration of the rod cells (motion detection) on the retina affect it.

Common causes of peripheral vision loss include glaucoma, stroke, branch retinal vein or artery occlusions, ischemic optic neuropathy, and migraine (transient).

Uncommon, or even rare, causes of peripheral vision loss include retinitis pigmentosa, choroideremia, gyrate atrophy, pituitary tumors, optic disc drusen (deposits), brain tumors and aneurysms, and tilted optic discs (nerves). Many other possibilities exist, but are rare.

The distinctions between central and peripheral vision are reflected in subtle physiological and anatomical differences in the visual cortex. Different visual areas contribute to the processing of visual information coming from different parts of the visual field, and a complex of visual areas located along the banks of the interhemispheric fissure (a deep groove that separates the two brain hemispheres) has been linked to peripheral vision. It has been suggested that these areas are important for fast reactions to visual stimuli in the periphery, and monitoring body position relative to gravity [1]

Eye color has no part in it.

Another answer

Loss of your peripheral vision is caused by some other condition, it has nothing to do with your eye color. I'm not an eye doctor but I have Glaucoma and I know the they always are checking to make sure I have not lost any peripheral vision because can cause blindness.

Answer 2

Yes, it can shrink, due to eye lids sagging a little bit with sleep deprivation.

Answer 3

no your eye colour is based on your parents eye colour and it doesn't make a difference to your pupil

Answer 4

yes it does