WBR0077

Author	PageAuthor::Kalsang Dolma
Exam Type	ExamType::USMLE Step 1
Main Category	MainCategory::Head and Neck
Sub Category	SubCategory::Anatomy
Prompt	[[Prompt::A 48 year old male presents with a two day history of eye pain, excessive watering of the eyes, and the sensation of foreign bodies in the eyes. He also has a history of multiple similar episodes in the past. On examination with Woods lamp and flourescein dye, multiple corneal erosions are noted. This condition results from failure of attachment between:]]
Answer A	AnswerA::Corneal epithelial cells and the basement membrane (Bowman's layer)
Answer A Explanation	AnswerAExp::
Answer B	AnswerB::The basement membrane (Bowman's layer) and the corneal stroma
Answer B Explanation	AnswerBExp::
Answer C	AnswerC::The corneal stroma and Descemet's membrane
Answer C Explanation	AnswerCExp::
Answer D	AnswerD::The corneal epithelial cells and Descemet's membrane
Answer D Explanation	AnswerDExp::
Answer E	AnswerE::
Answer E Explanation	AnswerEExp::
Right Answer	RightAnswer::A
Explanation	[[Explanation::This condition is called recurrent corneal erosions. It is a disorder of the eyes characterized by the failure of the cornea's outermost layer of epithelial cells to attach to the underlying basement membrane (Bowman's layer). The condition is frequently painful because the loss of these cells results in the exposure of sensitive corneal nerves. Patients presents with recurring attacks of acute eye pain, foreign-body sensation, photophobia (i.e. sensitivity to bright lights), and tearing often at the time of awakening or during sleep when the eyelids are rubbed or opened. Educational Objective: References: ]]
Approved	Approved::Yes
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