Soft Contact Lens Complications Practice Test

Which ulcer type is more associated with moderate to severe pain and photophobia?

Inflammatory ulcer Infectious ulcer Both equally Neither

Correct Answer:

Infectious ulcer

Explanation:

Pain and photophobia come from irritation of the corneal surface and its nerves. An infectious ulcer provokes a strong inflammatory response as invading organisms and their toxins trigger abundant neutrophils and inflammatory mediators, deeply irritating corneal nerves and creating a lot of pain. The exposed and damaged epithelial surface, along with ongoing inflammation, makes light uncomfortable, so photophobia is prominent. In contrast, sterile inflammatory ulcers can cause discomfort, but they typically provoke less intense pain and photophobia because there isn’t an active infectious process driving nerve irritation. Therefore, the infectious ulcer is the type most associated with moderate to severe pain and photophobia.

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