Angle closure glaucoma may be associated with: March 2013 (g)
**Core Concept**
Angle closure glaucoma occurs when the iris blocks the drainage angle of the eye, resulting in increased intraocular pressure (IOP) and potential vision loss. This condition is often associated with anatomical abnormalities, such as a shallow anterior chamber, or other factors that cause the iris to become apposed to the trabecular meshwork.
**Why the Correct Answer is Right**
The correct answer is related to the pathophysiology of angle closure glaucoma. In this condition, the iris becomes apposed to the trabecular meshwork, blocking the outflow of aqueous humor and leading to increased IOP. This can be caused by a variety of factors, including anatomical abnormalities, such as a shallow anterior chamber, or other conditions that cause the iris to become more anteriorly positioned, such as hyperopia or posterior chamber intraocular lens implantation.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to angle closure glaucoma. Central serous chorioretinopathy is a condition that affects the retina and choroid, and is not directly related to angle closure glaucoma.
**Option B:** This option is not correct because angle closure glaucoma is not typically associated with open-angle glaucoma. Open-angle glaucoma is a separate condition that occurs when the drainage angle is open, but the outflow of aqueous humor is impaired due to other factors.
**Option C:** This option is not correct because angle closure glaucoma is not typically associated with congenital glaucoma. Congenital glaucoma is a condition that occurs in infants and young children, and is typically characterized by an open-angle glaucoma.
**Clinical Pearl / High-Yield Fact**
A key risk factor for angle closure glaucoma is a shallow anterior chamber, which can be caused by hyperopia (farsightedness) or other conditions that cause the iris to become more anteriorly positioned. This is an important consideration for clinicians evaluating patients with suspected glaucoma.
**Correct Answer:** C. Conical cornea is a sign of congenital glaucoma