Distinguish between: (d) blind spot and yellow spot
Blindspot Devoid of photoreceptors and hence it is insensitive to light and there is no image formation. Eye coats and pigments are absent Yellow spot Rich in photoreceptors (cones) and hence is sensitive to light and aids in image formation. The yellow color is due to xanthophylls carotenoid pigments This consists of eye coats Responsible for light and color vision and provides high resolution of images