Distinguish between blind spot and yellow spot
Yellow Spot These are oval-shaped, pigmented regions found in the centre of the retina As these spots absorb blue and UV light entering the eye in excess, it is called so The yellowish appearance is a result of their content of zeaxanthin and lutein, which are yellow coloured xanthophyll carotenoids These special structures possess high acuity vision as it contains high-density cones These regions are involved in high resolution, colour vision possible in a fair amount of light; they are light-sensitive Blind Spot It is a region present on the retina, a visual field lacking light-detecting photoreceptors on the optic disc wherein the optic nerve fibres pass through the optic disc Since it lacks cells to detect light on the optic disc, the related part of this field of vision is not visible. Consequently, the part of the image falling on the field of vision does not get perceived as it lacks photoreceptors It is this very region wherein the main blood vessels supplying blood to the retina enter
