hyperopia

Thân thiện

A person with hyperopia holds a book at arm's length to read.

Definition

Noun: * A refractive error of the eye, also known as farsightedness, where distant objects can be seen more clearly than near objects. This occurs because light rays entering the eye focus behind the retina, often due to the eyeball being too short or the cornea having too little curvature.

Usage

• Hyperopia is a common vision condition, often correctable with glasses, contact lenses, or refractive surgery.
• A comprehensive eye exam can diagnose hyperopia.
• Children sometimes have mild hyperopia that they can accommodate for, but it may cause eyestrain or reading difficulties.

Examples

• Due to her hyperopia, she needs reading glasses to see the text on her phone clearly.
• The optometrist explained that the patient's headaches were likely caused by uncorrected hyperopia.
• Unlike myopia (nearsightedness), hyperopia makes seeing close-up objects more challenging.

Advanced Usage

• Accommodative esotropia: In some children, significant hyperopia can lead to this condition, where the eyes cross inward as the child exerts extra effort to focus.
• Presbyopia: This age-related condition, where the eye's lens loses flexibility, is often confused with hyperopia. While both affect near vision, their causes are different. A person can have both hyperopia and presbyopia.

Variants and Related Words

• Hyperopic (Adjective): Describing the condition or an eye with hyperopia.
  • He is hyperopic and requires plus-powered lenses.
• Farsightedness (Noun): A common synonym for hyperopia.
• Refractive error (Noun): The broader category of vision problems that includes hyperopia, myopia, and astigmatism.

Synonyms

• Farsightedness
• Longsightedness (primarily British English)

Antonyms

• Myopia (nearsightedness)
• Nearsightedness

Học thuật

Noun

1. abnormal condition in which vision for distant objects is better than for near objects

Từ đồng nghĩa

• hypermetropia
• hypermetropy
• farsightedness
• longsightedness