cornea

/'kɔ:niə/

Thân thiện

An ophthalmologist examines a patient's cornea with a slit lamp.

Definition

1. Noun:
   • The transparent, dome-shaped front part of the eye's outer covering: The cornea is the clear, curved surface that covers the front of the eye, including the iris and pupil. It acts as a protective window and is the eye's primary focusing element, responsible for most of the eye's optical power. It is continuous with the opaque white part of the eye, the sclera.

Examples of Usage

• Noun:
  • The doctor examined the patient's cornea for signs of damage.
  • A healthy cornea is essential for clear vision.
  • The injury caused a scratch on her cornea.

Advanced Usage

• "Corneal" (Adjective): Pertaining to the cornea.
  • She underwent corneal surgery to restore her sight.
• "Corneal transplant": A surgical procedure to replace a damaged cornea with a healthy donor cornea.
  • After the accident, he needed a corneal transplant.

Variants and Related Words

• Corneal (adj): Relating to the cornea.
  • Corneal abrasion is a common eye injury.
• Kerat- (prefix): A prefix used in medical terms relating to the cornea, from the Greek word for horn.
  • Keratitis is inflammation of the cornea.

Synonyms

• None direct: There is no single common word that is a direct synonym for "cornea." It is a specific anatomical term. Descriptive phrases like "the eye's clear front surface" or "the transparent ocular covering" can convey a similar meaning in non-technical contexts.

Related Phrases

• "Scratch on the cornea": A common term for a corneal abrasion.
  • Getting sand in your eye can cause a painful scratch on the cornea.

Related Idioms

• None: There are no common idioms in English that specifically feature the word "cornea."

Học thuật

Noun

1. the transparent dome-shaped anterior portion of the outer covering of the eye; it covers the iris and pupil and is continuous with the sclera