Question

Which structure of eye is related to focussing of light?

• A. Lens
• B. Cornea
• C. Retina
• D. Aqueous and vitreous humor

Answer 1

The correct option is A Lens

Accommodation is the process by which the vertebrate eye changes optical power to maintain a clear image or focus on an object as its distance varies. When the eye is relaxed and the interior lens is the least rounded, the lens has its maximum focal length for distant viewing. As the muscle tension around the ring of muscle is increased and the supporting fibers are thereby loosened, the interior lens rounds out to its minimum focal length. The crystalline lens is important for the eye to focus light.

So, the correct answer is option A.