Astigmatism: meaning, definitions and examples
๐๏ธ
astigmatism
[ รฆstษษกหmรฆtษชzษm ]
eye condition
Astigmatism is a common vision condition caused by an irregular shape of the cornea or lens in the eye. This shape prevents light from focusing properly on the retina, leading to blurred or distorted vision. It can occur in combination with other vision problems such as nearsightedness or farsightedness. People with astigmatism may experience difficulties with contrast and may notice headaches or eye strain. Regular eye examinations can help diagnose and manage astigmatism effectively.
Synonyms
blurred vision, distorted vision.
Examples of usage
- She has astigmatism and needs glasses to see clearly.
- Astigmatism can often be corrected with prescription lenses.
- Many people are unaware they have astigmatism until they get an eye exam.
Translations
Translations of the word "astigmatism" in other languages:
๐ต๐น astigmatismo
๐ฎ๐ณ เค เคธเคพเคฎเคพเคจเฅเคฏเคคเคพ
๐ฉ๐ช Astigmatismus
๐ฎ๐ฉ astigmatisme
๐บ๐ฆ ะฐััะธะณะผะฐัะธะทะผ
๐ต๐ฑ astygmatyzm
๐ฏ๐ต ไนฑ่ฆ
๐ซ๐ท astigmatisme
๐ช๐ธ astigmatismo
๐น๐ท astigmatizma
๐ฐ๐ท ๋์
๐ธ๐ฆ ุงุณุชุฌู ุงุชูุฒู
๐จ๐ฟ astigmatismus
๐ธ๐ฐ astigmatizmus
๐จ๐ณ ๆฃๅ
๐ธ๐ฎ astigmatizem
๐ฎ๐ธ astigmatisma
๐ฐ๐ฟ ะฐััะธะณะผะฐัะธะทะผ
๐ฌ๐ช แแกแแแแแแขแแแแ
๐ฆ๐ฟ astigmatizm
๐ฒ๐ฝ astigmatismo
Etymology
The term 'astigmatism' originates from the Greek words 'a-' meaning 'without', and 'stigma' meaning 'a point' or 'mark'. It was first used in the 17th century to describe a condition where light rays converge at different points, leading to distorted or blurred images. The concept of astigmatism became more widely known in the early 19th century through advancements in optics and understanding of the eye's anatomy. As medical knowledge progressed, the understanding and classification of different types of astigmatism evolved, leading to improved diagnostic techniques and corrective measures. Today, astigmatism is recognized as a prevalent refractive error in vision that can be easily diagnosed and treated.
Word Frequency Rank
Positioned at #24,318, this word is part of extensive vocabulary. It's relatively rare in general usage but may be important in specific fields or formal writing.
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- 24315 trendy
- 24316 graven
- 24317 chiropractic
- 24318 astigmatism
- 24319 rationed
- 24320 hawthorn
- 24321 epistolary
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