Definition

1. Noun:
   • A type of glaucoma: "closed-angle glaucoma" is a specific eye condition characterized by a blockage of the drainage angle in the eye, formed by the iris and cornea.
   • Mechanism: It occurs when the iris physically blocks or closes the angle where aqueous humor fluid should drain from the eye.
   • Consequence: This blockage can lead to a sudden, dangerous increase in intraocular pressure (eye pressure).

Usage Examples

• Noun:
  • The patient was diagnosed with closed-angle glaucoma after experiencing severe eye pain and blurred vision.
  • Unlike open-angle glaucoma, closed-angle glaucoma often requires urgent medical treatment to prevent vision loss.

Advanced Usage

• "acute closed-angle glaucoma": A term emphasizing the sudden, severe onset of the condition.
  • Acute closed-angle glaucoma is a medical emergency that can cause nausea and halos around lights.

Variants and Related Words

• Angle-closure glaucoma (n): A synonymous term for closed-angle glaucoma.
  • Angle-closure glaucoma is another name for the same condition.
• Narrow-angle glaucoma (n): Another term often used interchangeably, referring to the anatomical narrowing that precedes closure.
• Open-angle glaucoma (n): The more common, chronic form of glaucoma where the drainage angle is open but functions poorly.

Synonyms

• Angle-closure glaucoma: The most direct synonym.
• Narrow-angle glaucoma: Often used synonymously, though it can sometimes refer to a precursor stage.

Notes on Meaning

• Medical Specificity: "Closed-angle glaucoma" specifically refers to the of the disease (physical angle closure), distinguishing it from other forms like open-angle glaucoma. It is not a general term for eye pressure problems.
• Urgency: This term typically implies a potential for rapid progression and acute attacks, which is a key part of its meaning in a medical context.

Noun

1. glaucoma in which the iris blocks the outflow of aqueous humor
   • closed-angle glaucoma can cause a rapid buildup of high intraocular pressure that results in permanent visual damage in a couple of days