In which part of the human eye is the image of an object formed?

Question

Question

This question was previously asked in

KGMU Nursing Officer 2023 Memory-Based Previous Year Paper

Answer 1

Correct Answer: Retina

Rationale:

The retina is a crucial part of the human eye where the image of an object is formed. It acts like a screen at the back of the eye that captures light and converts it into electrical signals to be processed by the brain.
Light enters the eye through the cornea and lens, which focus it onto the retina. The retina contains photoreceptor cells called rods and cones that detect light intensity and color, respectively. These cells then transmit the visual information to the brain via the optic nerve, allowing us to perceive the image.
The retina ensures that the image formed is sharp and clear when the eye's focusing mechanism, including the lens, works correctly.

Explanation of Other Options:

Iris

Rationale: The iris is the colored part of the eye that controls the size of the pupil. It regulates the amount of light entering the eye but does not play a role in forming the image.

Cornea

Rationale: The cornea is the transparent, dome-shaped surface at the front of the eye. It helps in bending (refracting) light to focus it onto the retina but does not form the image itself.

Pupil

Rationale: The pupil is the black circular opening in the center of the iris that allows light to enter the eye. It merely serves as a gateway for light and does not participate in image formation.

Conclusion:

The retina is the part of the eye where the image of an object is formed. It works in conjunction with other structures such as the cornea, lens, and pupil to ensure proper focusing of light. While the iris, cornea, and pupil have significant roles in regulating and focusing light, they do not directly contribute to the formation of the image itself.