Astigmatism
Definition
A refractive error of the eye, either congenital or acquired, characterized by an irregular, asymmetrical curvature of the cornea or lens, which prevents light rays from converging onto a single focal point on the retina, causing blurred, unclear, or distorted vision both at a distance and up close.
Bilingual Equivalents
- Astigmatism
- Refractive blur
Grammatical & Source Details
| Inflection Type | Neuter noun, single-form pattern typical for scientific conditions ending in '-ism', plural variants are abstract. |
| Formation | Formed from Greek roots combining the privative marker 'a-' with 'stigma' (point), entering modern terminology via French medical treatises. |
| Spelling / Pronunciation | [as.tiɡ.ma.ˈtizm] |
| Source | IUPAC/WHO Ophthalmic Standardization Manuals & Academic Romanian Lexicon |
Contextual Usage Examples
RO: Un astigmatism necorectat la copii poate provoca dureri de cap frecvente, lăcrimare și dificultăți mari la citirea textelor de pe tablă.
EN: An uncorrected astigmatism in children can cause frequent headaches, tearing, and great difficulty reading texts from the blackboard.
RO: Medicul a folosit un topograf cornean pentru a măsura cu precizie axele și severitatea acestui astigmatism.
EN: The doctor used a corneal topographer to precisely measure the axes and severity of this astigmatism.
RO: Operațiile cu laser excimer pot remedia un astigmatism stabil prin remodelarea curburii exterioare a corneei.
EN: Excimer laser surgeries can remedy a stable astigmatism by reshaping the outer curvature of the cornea.
Idioms & Phrases
Astigmatism miopic / Myopic astigmatism
RO: Defect optic combinat în care unul sau ambele meridiane principale ale ochiului focalizează razele de lumină în fața retinei.
EN: A combined optical defect where one or both principal meridians of the eye focus light rays in front of the retina.
Astigmatism neregulat / Irregular astigmatism
RO: Formă complexă de viciu de refracție provocată adesea de cicatrici corneene sau de keratoconus, unde meridianele nu sunt perpendiculare.
EN: A complex form of refractive error often caused by corneal scars or keratoconus, where the principal meridians are not perpendicular.
Corecție pentru astigmatism / Astigmatism correction
RO: Prescrierea de lentile cilindrice sau torice destinate să compenseze asimetria oculară și să restabilească focalizarea corectă.
EN: The prescription of cylindrical or toric lenses aimed at compensating for ocular asymmetry and restoring proper focus.
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