keratectasia

Thân thiện

A doctor uses a specialized light to examine a patient's eye for signs of keratectasia.

Definition

1. Noun:
   • Abnormal bulging of the cornea of the eye: A medical condition where the cornea, the clear front surface of the eye, protrudes or bulges outward in an irregular manner. This distortion can lead to visual impairment.

Usage

• Medical Diagnosis: The term is used specifically in ophthalmology to describe a pathological corneal shape.
• Symptom Description: It is used to characterize a finding during an eye examination.

Examples

• The patient's deteriorating vision was attributed to keratectasia.
• Advanced keratectasia often requires specialized contact lenses or surgical intervention.
• The corneal topography map confirmed the diagnosis of keratectasia.

Advanced Usage

• Post-operative keratectasia: A known potential complication following certain refractive eye surgeries, such as LASIK, where the cornea becomes unstable and bulges.
  • The development of post-LASIK keratectasia is a serious concern for surgeons.

Variants and Related Words

• Ectasia (n): A more general term for the dilation, distension, or bulging of a tubular structure or organ.
• Keratoconus (n): A specific, progressive type of corneal ectasia where the cornea thins and bulges into a cone-like shape. Keratoconus is a common form of keratectasia.

Synonyms

• Corneal bulging
• Corneal ectasia (a near-synonymous term often used interchangeably)

Antonyms

• Normal corneal topography
• Corneal flattening (as in some other conditions or surgical outcomes)

Học thuật

Noun

1. abnormal bulging of the cornea of the eye