Question

Vascular coat of eye ball is made up of

• A. Sclerotic, choroid and retina
• B. Optic, ciliary and iridial
• C. Sclerotic, cornea and conjunctiva
• D. Choroid, ciliary body and iris

Answer 1

The correct option is D Choroid, ciliary body and iris

• Sclera is the external layer of eye which maintains the shape of eye and also protects it.
• Choroid is the middle layer of eye which contains many blood vessels and appears bluish in colour.
• Retina is present in the inner layer of eye. The image is perceived by brain and formed on the retina.
• Cornea is the anterior portion of eye which absorbs oxygen from the air.
• Iris surrounds the pupil and regulates the amount of light entering the eye by controlling the size of pupil. It has cells of varying colours and hence imparts colour to the eye.
• Ciliary body is a part of middle layer of eye. It consists of ciliary muscles which adjust the shape of lens.
• Conjunctiva is a thin transparent membrane lining the eyelids.
  
• Optic nerve is the cranial nerve that carries information related to vision to the brain.

The vascular coat of eye is present beneath the fibrous layer and consist of choroid, ciliary body and iris.

So, the correct answer is 'Choroid, ciliary body and iris'.