Question

In eye donation, which one of the following parts of the donor’s eye is utilized?
(a) Cornea
(b) Lens
(c) Iris
(d) Retina

Answer 1

Hint: The part of the body that is used in eye donation is the transparent tissue covering the front of the eye. If it is impaired, vision is reduced or lost. In such cases, a simple surgery called keratoplasty may restore vision.

Complete answer:
- Eye donation after his / her death is an act of donating one's eyes. This process can only help corneal blinds, not any other blinds.

- Cornea is the transparent front surface of the eye, the main focusing component. It allows light to reach the eye, much like a window. If the cornea becomes cloudy or scarred, vision might be markedly impaired or lost. This disease is called corneal blindness. 
- Corneal transplantation is a surgical procedure that replaces an affected corneal disc- shaped fragment with a similarly shaped portion of a healthy donor cornea.

Additional information:
- The cornea is the transparent front part of the eye that covers the anterior chamber, pupil, and iris. The cornea refracts light with an anterior chamber and lens, with the cornea accounting for approximately two- thirds of the total optical power of the eye.
The refractive capacity of the cornea in humans is approximately 43 diopters. Surgical procedures such as LASIK will reshape the cornea.
So, the correct answer is, ‘Cornea’.

Note: Eye donation is an act of charity that is completely voluntary, solely for the good of society. After death, it is done. The dryness and stiffness of the cornea usually induce blindness. The cornea is a translucent layer that allows light to move away. It is an outer layer and can be passed from one person to another.
For the preservation and restoration of sight, cornea donation is necessary; one cornea donor may restore sight to 2 individuals.