Question

The visible coloured ring of the eye is called:

• A. \( \text{Lens} \)
• B. \( \text{Retina} \)
• C. \( \text{Cornea} \)
• D. \( \text{Iris} \)

Hint:

The color of the iris is determined by the amount and type of pigment (melanin) it contains. It varies among individuals and can range from brown to blue, green, or gray.

Answer 1

The Correct Option is D

Step 1: Understanding the anatomy of the eye. The iris is the colored, circular structure in the eye that surrounds the pupil. It controls the amount of light entering the eye by adjusting the size of the pupil. 

Step 2: Comparison with other options. - Option \( (A) \): The lens is a transparent, biconvex structure behind the iris that focuses light onto the retina. 
- Option \( (B) \): The retina is the light-sensitive layer at the back of the eye responsible for converting light into neural signals. 
- Option \( (C) \): The cornea is the clear, dome-shaped surface that covers the front of the eye and refracts light. 

Conclusion. The visible colored part of the eye is the iris, making \( (D) \) the correct answer.