fovea centralis मीनिंग इन हिंदी

अधिक: आगे

Frontal-eyed animals have a small area of the retina with very high visual acuity, the fovea centralis.
In the fovea centralis or macula lutea or simple yellow spot, cones predominate and are present at high density.
There are two to three rods per cone in the fovea centralis but five to six near the optic papilla.
It is analogous to the way most primates move their eyes to focus images of interest onto the " fovea centralis ".
The parafovea extends to a radius of 1.25 mm from the central fovea, and the perifovea is found at a 2.75 mm radius from the fovea centralis.
The eyes of birds, he notes, have a double set of fovea centralis, those depressions in the center of the retina where the focus of the eye is most acute.
Fovea ( or " Fovea centralis " ) is the depression in the inner retinal surface, about 1.5 mm wide, the photoreceptor layer of which is entirely cones and which is specialized for maximum visual acuity.
An issue that K�hne encountered when attempting to produce an image from a human eye is that the size of the fovea centralis, the actual focal point of the image on the retina, is very small ( about 1.5 millimetres ).

संज्ञा.

area consisting of a small depression in the retina containing cones and where vision is most acute
पर्याय: fovea