Question

Transparent front part of eye is:
A. Pupil
B. Cornea
C. Iris
D. Retina

Answer 1

Hint:Transparent front part of eye is Cornea. Because, cornea has two-thirds of the total optical power of the eye. It is the major part which allows light to enter into the eye. Primary refractive surface of the eye. Cornea is normally transparent and uniformly thick.

Complete answer:
Pupil: pupil is opening in the center of iris. Functioning of pupil is, to allow light enter into the eye and focused on the retina to begin the process of sight. If a pupil has pale color, due to formation of cataract the lens of the eye becomes opaque. When someone takes our photo using flash light then the pupil of the eye becomes red, due to intense light from the flash being reflected by the red color of the retina.

Cornea: cornea is the clear front surface of the eye, it lies in front of the iris and pupil and allows light to enter into the eye. The average thickness of the cornea is 550microns. Cornea has five layers from front to back, those layers are: Corneal epithelium, Bowman’s layer, corneal stroma, Descemet’s membrane and corneal endothelium.

Iris: In humans, mammals and birds, the iris is a thin, annular structure in the eye. Eye color is defined by the iris. Iris is a flat and ring shaped membrane that lies behind the cornea of the eye. It’s made of almost thin smooth connective tissues.

Retina: it is a sensory membrane that lines the inner surface of the back of the eyeball. It is located near the optic nerve, it will contain millions of photoreceptors that convert light rays.

Note: We discussed all the given options, we are clear that, transparent front part of the eye is cornea. As we discussed earlier in the cornea section. The correct option from the given options is option B. Transparent front part of the eye is Cornea.