Question

Which of the following is the outermost layer of the eye?
A. Sclerotic layer
B. Choroid Layer
C. Retina
D. Mucous membrane

Answer 1

Hint: The white part of the eye is considered to be the outermost layer of the eye and is called the sclera. Sclerotic layer is considered to be the outermost layer of the eye and from outside it is visible as the white part of the eye. Choroid layer is the layer which is just below the sclerotic layer of the eye and is responsible for containing the ciliary muscles, which are used in order to have the accommodation of the lens

Complete answer:
Sclerotic layer is considered to be the outermost layer of the eye and from outside it is visible as the white part of the eye. Choroid layer is the layer which is just below the sclerotic layer of the eye and is responsible for containing the ciliary muscles, which are used in order to have the accommodation of the lens. The eye is divided in two chambers: Aqueous humour and vitreous humour. Aqueous humour is present on the anterior part of the lens which the vitreous humour is present on the posterior part of the lens. The aqueous humour and vitreous humour is covered by the choroid layer.
Retina is that region of the eye that contains a huge density of optic nerve cells. Optic nerve cells contain certain chemicals like rhodopsin and iodopsin which get activated by the exposure to light. Retina has the ability to sense the visual signal and transmit impulse to the brain accordingly, so that the image is interpreted properly.
So, the correct answer is “Option A”.

Note:
Mucous membrane is there in order to reduce the amount of friction that exists in the eye. It works as a lubricant in order to have the normal physiology of the eye. Cornea part of the eye is the transparent region of the eye that bulges out from the sclerotic layer in order to have proper refraction of light. Aqueous humour is present inside the cornea.