Question

Iris is a part of

• A. Sclerotic
• B. Choroid/ Uvea
• C. Choroid and retina
• D. Selerotic and choroid

Answer 1

The correct option is D Selerotic and choroid

• Sclera is the external layer of eye that maintains its shape and also protects it.
• Choroid is the middle layer of eye.
• Uvea is the pigmented layer of eye that lies beneath sclera and cornea. It comprises of choroid, iris and ciliary body.
  
• Retina is the inner layer of eye that contain photoreceptor cells.

Iris is a pigmented and opaque structure present in choroid. It gives colour to the eye and controls the amount of light entering the eye by changing the shape of pupil. The outer edge of iris is attached to sclera and hence, it is a part of sclera and choroid.

So, the correct answer 'Sclerotic and choroid'.