Astigmometer
an apparatus for measuring the degree of .
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- Astigmatoscope
an instrument for determining the presence and severity of . astigmatoscope as·tig·mat·o·scope (ās’tĭg-māt’ə-skōp’) or a·stig·mo·scope (ə-stĭg’mə-skōp’) n. An instrument for detecting and measuring the degree of astigmatism. a·stig’ma·tos’co·py (-tŏs’kə-pē) or as’tig·mos’co·py (-mŏs’kə-pē) n.
- Astigmatoscopy
examination by means of an astigmatoscope.
- Astigmia
Also called astigmia [uh-stig-mee-uh] /əˈstɪg mi ə/ (Show IPA). Ophthalmology. a refractive error of the eye in which parallel rays of light from an external source do not converge on a single focal point on the retina. Optics. an aberration of a lens or other optical system in which the image of a point is […]
- Astigmoscope
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- Astilbe
any plant of the genus Astilbe, of the saxifrage family, having spirelike clusters of small white, pink, or reddish flowers. noun any perennial saxifragaceous plant of the genus Astilbe of E Asia and North America: cultivated for their ornamental spikes or panicles of pink or white flowers