Yellow patch in eye

What’s Causing My Kaleidoscope Vision?
A reduction of your ability to see objects off to the sides could be a sign of glaucoma. Without intervention, peripheral vision loss could continue to worsen, leading to tunnel vision or even blindness. Seeing black patches in vision Strabismus:Your eyes don't move together as they should. Both eyes or just one could be crossed inward or outward. A child who has it may rub one or both eyes often. They could also squint, tilt their head, or close one eye to see things better.
Seeing yellow patches in vision
About Cleveland Clinic
In most people, pingueculae don't cause many symptoms. But when they do, those symptoms usually stem from a disruption of the tear film. Because a pinguecula is a raised bump on the eyeball, the natural tear film may not spread evenly across the surface of the eye around it, causing dryness. Mayo Clinic Press Yellow spots that disappear soon after staring at a bright light or rubbing your eyes are normal and don’t require treatment. Treatment for other conditions involves targeting the underlying cause. Here are potential treatment options for some of the reasons you may be seeing yellow spots.