Which structure of the eye contracts first on contact with the incoming light ray?

A)
Anterior chamber

B)
Iris

C)
Bulbular conjunctiva

D)
Cornea

Question

Which structure of the eye contracts first on contact with the
incoming light ray?

A)
Anterior chamber

B)
Iris

C)
Bulbular conjunctiva

D)
Cornea

Amaj Ahmed · Accepted Answer

B) Iris Iris control the size of pupil and thus regulate the amount
of light reaching the retina Iris contract and relax in response to
incoming light and thus mediate the amount of light entering the
eye

Which structure of the eye contracts first on contact with the incoming light ray? A) Anterior chamber B) Iris C) Bulbular conjunctiva D) Cornea

Which structure of the eye contracts first on contact with the incoming light ray?

A)
Anterior chamber

B)
Iris

C)
Bulbular conjunctiva

D)
Cornea