anastigmatic
/æ,næstig'mætik/
Definition
- Adjective:
- Not astigmatic: Describes an optical condition or a person's eye that is free from astigmatism, a defect causing blurred vision due to an irregularly curved cornea or lens.
- Pertaining to a lens or lens system free of astigmatism: Describes a lens or optical system that is corrected for astigmatism and is therefore able to form sharp, point-like images of a point source of light.
Usage Examples
- Adjective:
- After her laser eye surgery, her vision became perfectly anastigmatic.
- This high-quality camera lens is anastigmatic, producing images with exceptional edge-to-edge sharpness.
Advanced Usage
- Technical/Optical Context: The term is primarily used in technical fields like ophthalmology, optometry, photography, and microscopy.
- The microscope's anastigmatic objective lens is crucial for detailed cellular imaging.
Variants and Related Words
- Anastigmat (noun): A lens or optical system that is corrected for astigmatism.
- The photographer invested in a new anastigmat for his portrait work.
Synonyms
- Stigmatic (in optical contexts, meaning free from astigmatism).
- Corrected (for astigmatism).
Antonyms
- Astigmatic: Having or pertaining to astigmatism.
Adjective
-
not astigmatic
-
pertaining to a lens or lens system free of astigmatism (able to form point images)
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