The correct answer is A = the area in the eye where yellow spot is seen.
A pinguecula is a fairly common, non-cancerous growth that forms on the conjunctiva, or white tissue near the cornea. It is a yellowish patch or bump, and typically forms on the inner side of the eye, near the nose. A pinguecula is caused by changes in your conjunctiva tissue.A convex lens or converging lens focuses the light rays to a specific point whereas a concave lens or diverging lens diverges the light rays. When these lenses are combined, they produce sharper images.
- Binoculars and telescopes.
- Cameras.
- Eye glasses.
- Flashlights.
- Lasers ( CD, DVD players)
On the basis, of the curvature of the two optical surfaces lenses are of two types biconvex and convex-concave. If the lens is biconvex or plano-convex, the lens is positive or converging.onvex lens is a used to get a magnified image of an object. It is used in the tools used by ENT doctors. Magnifying glass is also a convex lens.
Concave lenses are used in telescope and binoculars to magnify objects. As a convex lens creates blurs and distortion, telescope and binocular manufacturers install concave lenses before or in the eyepiece so that a person can focus more clearly.Biconcave - A lens in which both sides are concave is biconcave. Biconcave lenses are diverging lenses. Plano-concave - A lens in which one side is concave and the other is plano. Plano-concave lenses are diverging lenses.The lens of the eye is a convex lens. It fine-tunes the focus so an image forms on the retina at the back of the eye. Tiny muscles control the shape of the lens to focus images of close or distant objects.