Found out why it is important for you and your family to take an eye test.Read More » What is LASIK LASIK is a laser eye surgery correcting myopia, hyperopia, and astigmatism.Read More » Colored Contacts in Trend More and more people are catching up to the latest trend - Colored ...
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astigmatism Dictionary, Encyclopedia and Thesaurus - The Free Dictionary13,864,983,979visits served TheFreeDictionary Google ? Keyboard Word / Article Starts with Ends with Text EnglishEspañolDeutschFrançaisItalianoالعربية中文简体PolskiPortuguêsNederlandsNorskΕλληνικήРу...
Twitter Google Share on Facebook anastigmatic Thesaurus Medical Encyclopedia an·as·tig·mat·ic (ăn-ăs′tĭg-măt′ĭk) adj. Free from astigmatism. Used of a compound lens in which the separate components compensate for the astigmatic effects of each lens. ...
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org) power surge An oversupply of voltage from the power company that can last up to 50 microseconds. Although surges are very short in duration, they often reach 6,000 volts and 3,000 amps when they arrive ...
A ray-tracing computer programme has been developed to analyse and design Ebert spectrometers. Using this programme the author has found families of spectrometers that have no astigmatism or coma. In general these spectrometers are usable over only a narrow spectral range, but special cases were ...
If you have astigmatism, that means you need toric lenses. They have small weights in the bottom so they settle in the right position on your eye. That way, the lenses line up correctly in the right position to provide the vision correction you need across your pupils. ...
Astigmatism and visual recovery after ‘large incision’ extracapsular cataract surgery and ‘small’ incisions for phakoemulsification. Trans Am Ophthalmol Soc 1997; 95: 387–415. CAS PubMed PubMed Central Google Scholar Joannes L, Dubois F, Legros JC . Phase-shifting schlieren: highresolution...
The chief monochromatic aberrations are spherical (aperture) aberrations, coma, astigmatism, curvature of field, and distortion. Each surface in an optical system introduces aberrations as the light beam passes through the system. The aberrations of the entire system consist of the sum of the ...
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