Final answer:
The likely diagnosis for a patient with a non-painful, non-bothersome hard lump inside their eyelid is a chalazion, which is a blocked oil gland in the eyelid. The correct answer is option: d. Chalazion
Step-by-step explanation:
A patient with a hard lump inside their eyelid that is not painful or bothersome likely has a chalazion. A chalazion is a chronic granuloma of the eyelid, which is caused by obstruction of the meibomian gland duct.
Herpes keratitis, in contrast, involves symptoms such as irritation, excess tears, and light sensitivity due to inflammation of the cornea and conjunctiva.
A chalazion tends to develop away from the edge of the eyelid and does not usually present with the acute inflammatory signs characteristic of conditions such as hordeolum (stye) or different types of conjunctivitis and blepharitis.