2. Optical Illusion Sometimes what we see may not appear to be the real thing. This is because the brain cannot interpret accurately what is actually seen by the eye. This limitation of the sense of sight is known as optical illusion (confusion of the brain)
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10. Blind spot The blind spot is a point on the retina of the eye that cannot detect any images. The blind spot does not have any receptors sensitive to light and is found at the beginning of the optic nerve. We cannot see an object if its image is formed on the blind spot.
