Pterygium is most commonly caused by exposure to which factor?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Study for the NBEO Ocular Disease Part 1 Test. Use flashcards and multiple choice questions, each with hints and explanations, to prepare for your exam! Get ready for your success!

Multiple Choice

Pterygium is most commonly caused by exposure to which factor?

Explanation:
UV light exposure is the main cause. Chronic UV radiation, especially UV-B, damages the limbal area of the eye and triggers a fibrovascular proliferation from the conjunctiva that grows onto the cornea, forming a pterygium. This is more common in people with significant outdoor sun exposure, such as outdoor workers and those living near the equator. While irritation from cigarette smoke, bacteria, or allergic reactions can accompany eye problems, they do not typically initiate the characteristic tissue growth onto the cornea, making UV exposure the best explanation.

UV light exposure is the main cause. Chronic UV radiation, especially UV-B, damages the limbal area of the eye and triggers a fibrovascular proliferation from the conjunctiva that grows onto the cornea, forming a pterygium. This is more common in people with significant outdoor sun exposure, such as outdoor workers and those living near the equator. While irritation from cigarette smoke, bacteria, or allergic reactions can accompany eye problems, they do not typically initiate the characteristic tissue growth onto the cornea, making UV exposure the best explanation.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy