is it the physiologic blind spot is observed when light from an object falls upon the macular region? T or F ?

Answer 1

False. The macula is in the center of the retina, the light-sensitive paper-thin layer of tissue at the back of the eye. As we read, light is focused onto the macula. In the macula, millions of cells change the light into nerve signals that travel to the brain and tell it what we are seeing. This is called our central vision. With normal central vision, we are able to read, drive, and perform other activities that require fine, sharp,precision skills.

The macula is the area of the retina responsible for the center of our vision. The macula often deteriorates as we age, causing age-related macular degeneration. Many patients with this condition lose some or all of their ability to see straight ahead, and are left with only peripheral (side) vision.

Physiologic Blind spot
The area of the optic disk where the optic nerve fibers exit the eye and where there are no light-sensitive cells.;or photoreceptors.

The physiologic blind spot located in the optic disk is normally found in all healthy individuals. It's different from the blurred spot or blind spot in the central vision of the macula associated with aged individuals with macular degenerative disease.

Answer 2

The optic nerve head is the location where there are no light sensitive rods or cones to respond to a light stimulus. The break in the visual field created by the optic disc is also called "the blind spot" or "physiological blind spot".

The macular region is the back wall of the eye... so yes and no. the blind spot is found in the macular region, but the whole macular region is not a blind spot.

- check out this pic to clear things up- http://upload.wikimedia.org/wikipedia/commons/e/ed/Human_eye_cross-sectional_view_grayscale.png