WBR0077: Difference between revisions
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|MainCategory=Head and Neck | |MainCategory=Head and Neck | ||
|SubCategory=Anatomy | |SubCategory=Anatomy | ||
|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: | |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: | ||
|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. | |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. | ||
Revision as of 19:32, 2 January 2013
| 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::The disorder of recurrent corneal erosion occurs due to a poor adhesion between the corneal epithelial cells and the basement membrane cells (Bowman's layer). |
| Answer B | AnswerB::The basement membrane (Bowman's layer) and the corneal stroma |
| Answer B Explanation | AnswerBExp::The disorder of recurrent corneal erosion occurs due to a poor adhesion between the corneal epithelial cells and the basement membrane cells (Bowman's layer). |
| Answer C | AnswerC::The corneal stroma and Descemet's membrane |
| Answer C Explanation | AnswerCExp::The disorder of recurrent corneal erosion occurs due to a poor adhesion between the corneal epithelial cells and the basement membrane cells (Bowman's layer). |
| Answer D | AnswerD::The corneal epithelial cells and Descemet's membrane |
| Answer D Explanation | AnswerDExp::The disorder of recurrent corneal erosion occurs due to a poor adhesion between the corneal epithelial cells and the basement membrane cells (Bowman's layer). |
| 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: |
| Approved | Approved::Yes |
| Keyword | |
| Linked Question | Linked:: |
| Order in Linked Questions | LinkedOrder:: |