Final answer:
Superficial punctate keratitis is defined as the death of small groups of cells on the surface of the cornea. It necessitates no immediate action but referral to an optometrist.
Step-by-step explanation:
The correct answer is b) Superficial punctate keratitis. Superficial punctate keratitis is defined as the death of small groups of cells on the surface of the cornea. It is a condition that does not require immediate action but should be referred to an optometrist for further evaluation and treatment.