astigmia

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Word: Astigmatism

Part of Speech: Noun

Usage Instructions:

• When to use "astigmatism": You can use the word "astigmatism" when discussing eyesight problems, particularly in a medical or optical context. It is often used in conversations about eye exams, glasses, or contact lenses.

Example Sentences:

1. Simple: "I need glasses because I have astigmatism."
2. Advanced: "The optometrist explained that my astigmatism was causing my vision to be unclear, especially when reading small print."

Word Variants:

• Astigmatic (adjective): Relating to or affected by astigmatism.
  • Example: "He received astigmatic correction lenses to improve his vision."
• Astigmatism's (possessive form): Referring to something belonging to astigmatism.
  • Example: "The effects of astigmatism's distortion were evident in her blurry vision."

Different Meanings:

• In a broader sense, "astigmatism" primarily refers to the optical condition affecting vision. It doesn't have many alternative meanings outside of this context.

Synonyms:

• Optical defect
• Vision impairment

Related Idioms and Phrasal Verbs:

• There aren't specific idioms or phrasal verbs that relate directly to "astigmatism," but you might hear phrases like "see clearly" (to understand something) or "in focus" (to be clear or understandable) when discussing vision.

Summary:

Astigmatism is a common eye condition that leads to blurred vision due to the irregular shape of the cornea. It can affect both distance and near vision, and it is often corrected with glasses or contact lenses.

Academic

Noun

1. (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
2. (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people

Synonyms

• astigmatism