What is the most sensitive part of the retina
The most light sensitive part of the retina is an area in the centre of the retinal surface which is packed with smaller sized hexagonal cone cells. This part is called the fovea centralis or simply the fovea. This region has the highest concentration of cone cells than anywhere else in the retina, because it is this region which is focussed on a point in the visual field when we have to concentrate on that point.
MACULA - This part of the retina is the most sensitive. Its diameter is only 7 mm or about 1/4 inch. It is responsible for our central, or reading vision. This part of the retina gives us 20/20 vision. Without the macula, you would be blind - Legally Blind that is. People with eye diseases like Macular Degeneration have vision from 20/200 to 20/800This part of the retina is the most sensitive. Its diameter is only 7 mm or about 1/4 inch.