Question

The region of distinct vision in the eye is ............

Answer 1

The retina is the light-sensitive innermost layer of tissue in most vertebrates and certain mollusks' eyes. The optics of the eye produce a concentrated two-dimensional representation of the visual world on the retina, which is translated into electrical nerve impulses and transmitted to the brain to provide visual perception. The retina performs a similar role as the film or image sensor in a camera.

Complete step by step solution:
The neural retina is made up of many layers of neurons linked by synapses and supported by a layer of pigmented epithelial cells on the outside. Photoreceptor cells, which come in two types: rods and cones, are the retina's principal light-sensing cells. Rods are mostly used in low-light situations and give black-and-white vision. Cones are responsible for colour perception as well as high-acuity vision needed for tasks such as reading in well-lit environments. The photosensitive ganglion cell, a third kind of light-sensing cell, is crucial for entrainment of circadian cycles and reflexive reactions like the pupillary light reflex.
The fovea centralis is a tiny central pit in the eye made up of densely packed cones. It is found in the macula lutea of the retina. The fovea is in charge of acute centre vision, which is required in humans for tasks requiring a high level of visual detail, such as reading and driving. The parafovea belt and the perifovea outer area surround the fovea. The parafovea is an intermediate belt with more than five layers of ganglion cells and the largest density of cones; the perifovea is the outermost region with two to four layers of ganglion cells and lower visual acuity.
The number of cones in the perifovea is significantly lower, with 12 per 100 micrometres compared to 50 per 100 micrometres in the most central fovea. This, in turn, is surrounded by a wider peripheral region that gives highly compressed, low-resolution information, similar to the compression pattern seen in foveated imaging.
Hence Fovea centralis is the correct answer.

Note:
The fovea is represented by about half of the nerve fibres in the optic nerve, while the remainder of the retina is represented by the other half. From the central fovea, the parafovea extends to a radius of 1.25 mm, while the perifovea expands to a radius of 2.75 mm. The word fovea derives from the Latin word foves, which means "pit."