There is a potential to train an eye not to see . . . in the case of the abnormal alignment of the eyes in children, the brain cannot blend the inputs from two eyes that are looking in different places, so it "turns off" the (usually) more-crossed eye. If left untreated, the resulting blindness may not ever return.
I know a severely neurotic woman who has worn thick bandages over her eye for decades. As a result, now, when she takes off the bandages, she can barely see light and dark splotches.
You can perceive ten images per second by your eye. That is the reason, why you have ten images per second in case of the motion pictures. In that case you perceive that the object is in continuous motion. The human eye can see electromagnetic radiation in the frequency range 430-790 Terahertz, corresponding to colours from red to violet.
The human eye has three kinds of color receptors, which perceive red, yellow, and blue wavelengths of light. If you perceive red and yellow simultaneously, that is interpreted as orange.
A human eye can distinguish about 10 million different colors.
seeing
The eye and brain perceive a holographic image due to the fact that light enters the eye. The light is then converted into information through the optic nerve.
8
I can perceive that you don't like me. Based on your sudden black eye, you may perceive that Ella doesn't fancy you. Psychologists are trained to perceive stress in their patients.
Every color that the human eye can perceive, or the human brain can imagine, or the paint manufacturer can mix, or the fabric dyer/weaver can create, is included in the visible spectrum. There is no limit to the number of them.
as different colors
the human features of London are London eye, London bridge,big ben,train stations,tower of London, canary wharf,royal obserbatory,Stonehenge,buckhingham palace,hotels.
The human eye can only perceive the colors from violent to red. All colors that have a wave frequency higher than violent, "ultra-violent", and have a wave frequency lower than red, "infra-red", are invisible to the human eye. Since we cannot see these colors, we do not have names for them other than their frequencies.
1. Microscope 2. Telescope 3. Special cameras able to detect certain frequencies of electromagnetic radiation, that the human eye does not perceive (infrared, ultra-violet, gamma rays, x-rays, etc...)