Conjunctivitis affects which part?

Conjunctivitis affects which part?

• A. Conjunctiva.
• B. Iris.
• C. Retina.
• D. Cornea.

Answer: (A)

Conjunctivitis is inflammation of the conjunctiva, the thin membrane that covers the white of the eye and lines the inside of the eyelids. This surface is what becomes irritated and red in conjunctivitis, often with discharge and a gritty sensation. The other parts serve different roles: the iris controls how much light enters by changing pupil size, the retina is the light-sensitive layer at the back of the eye, and the cornea is the clear front surface that helps bend light. Since conjunctivitis specifically affects the conjunctiva, that is the correct part involved.

Conjunctivitis is inflammation of the conjunctiva, the thin membrane that covers the white of the eye and lines the inside of the eyelids. This surface is what becomes irritated and red in conjunctivitis, often with discharge and a gritty sensation. The other parts serve different roles: the iris controls how much light enters by changing pupil size, the retina is the light-sensitive layer at the back of the eye, and the cornea is the clear front surface that helps bend light. Since conjunctivitis specifically affects the conjunctiva, that is the correct part involved.