In a case of acute attack of glaucoma Vogt’s triad excludes:
**Core Concept**
Vogt's triad is a clinical sign associated with acute angle-closure glaucoma, characterized by a combination of three symptoms: pain, redness, and decreased vision. The pathophysiology of acute angle-closure glaucoma involves increased intraocular pressure (IOP) due to blockage of the trabecular meshwork, leading to optic nerve damage.
**Why the Correct Answer is Right**
The correct answer is related to the exclusion of a symptom that is not typically associated with Vogt's triad. Vogt's triad is a classic description of the symptoms seen in acute angle-closure glaucoma, which includes pain, redness, and decreased vision. The absence of nausea and vomiting in Vogt's triad is a key distinguishing feature from other conditions that may present with acute eye pain.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because nausea and vomiting are not typically part of Vogt's triad. While patients with acute angle-closure glaucoma may experience nausea and vomiting, it is not a characteristic feature of the triad.
* **Option B:** This option is incorrect because pain is a hallmark symptom of Vogt's triad, making it an essential component.
* **Option C:** This option is incorrect because redness is another key symptom of Vogt's triad, often accompanied by conjunctival injection.
* **Option D:** This option is incorrect because decreased vision is a classic symptom of Vogt's triad, resulting from increased IOP and optic nerve damage.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that Vogt's triad is specific to acute angle-closure glaucoma and does not describe symptoms associated with other conditions like open-angle glaucoma or other ocular emergencies. A thorough history and examination are necessary to differentiate between these conditions.
**Correct Answer: A. Nausea and vomiting are not part of Vogt's triad, which includes pain, redness, and decreased vision.**