QuestionDecember 16, 2025

Which of these viruses can spread to the eye to cause a form of keratitis? Herpes simplex virus Acanthamoeba Human papillomavirus Chlamydia trachomatis

Which of these viruses can spread to the eye to cause a form of keratitis? Herpes simplex virus Acanthamoeba Human papillomavirus Chlamydia trachomatis
Which of these viruses can spread to the eye to cause a form of keratitis?
Herpes simplex virus
Acanthamoeba
Human papillomavirus
Chlamydia trachomatis

Solution
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Answer

Herpes simplex virus Explanation 1. Identify causative agent for keratitis Keratitis can be caused by viruses, bacteria, fungi, and parasites. Among viruses, **Herpes simplex virus (HSV)** is a well-known cause and can spread to the eye, leading to **herpetic keratitis**. 2. Eliminate incorrect options Acanthamoeba is a protozoan (not a virus), Human papillomavirus is mainly linked to skin/mucosal lesions (not keratitis), and Chlamydia trachomatis is a bacterium causing trachoma, not viral keratitis.

Explanation

1. Identify causative agent for keratitis <br /> Keratitis can be caused by viruses, bacteria, fungi, and parasites. Among viruses, **Herpes simplex virus (HSV)** is a well-known cause and can spread to the eye, leading to **herpetic keratitis**. <br />2. Eliminate incorrect options <br /> Acanthamoeba is a protozoan (not a virus), Human papillomavirus is mainly linked to skin/mucosal lesions (not keratitis), and Chlamydia trachomatis is a bacterium causing trachoma, not viral keratitis.
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