Gedanken über den Bau eines Hornhaut-Interferometers

Uhlig, M.

doi:10.1159/000305036

Cited by 3 publications

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“…It was hoped that observation of surface shape of the tear layer with and without contact lenses would allow useful conclusions of the surface roughness of the cornea itself. No such conclusions can be drawn, but at least it has been demonstrated that separated-beam interferometry of in vivo human corneas is not impossible, an advance over the proposals of Uhlig (1967) that this should be attempted.…”

Section: Page 450mentioning

confidence: 99%

Some Experiments in Corneal Interferometry

Clark¹

1973

Clinical and Experimental Optometry

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Attempts were made to determine the thickness and variations of thickness of the pre-corneal film by means of interference fringes. A known technique proved relatively simple to apply but only gave information about the superficial oily layer of the pre-corneal film. Experiments intended to produce interference fringes formed across the whole of the film thickness on the anterior side of a hard corneal lens proved inconclusive but nevertheless useful, as movement of fluid in and out of the lens fenestration was observed by means of the fringes apparently formed in the superficial oily layer. Fleeting glimpses were obtained of fringes formed by the anterior surface of the pre-corneal film when the eye (in vivo) was positioned in a two-beam Interferometer. It is concluded that advances in experimental technlques may allow measurements of corneal topography for the purpose of contact lens fitting and raytracing through the cornea.

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Section: Page 450mentioning

confidence: 99%

Some Experiments in Corneal Interferometry

Clark¹

1973

Clinical and Experimental Optometry

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“…One of the principal requirements for interferometry is that the tested surface and the measuring wavefront should be stationary relative to each other, or at least, relative movement should be so small that the resulting fringe motion does not prevent accurate fringe counting or photography. Uhlig (1967) presented proposals for corneal interferometry; as well as Fizeau interferometry, he suggested Michelson interferometry. Since what he called a 'Michelson-Interferometer' had a point light source and autocollimated light paths, it is actually a variant of the Twyman-Green Interferometer.…”

Section: Interferometrymentioning

confidence: 99%

Less Common Methods of Measuring Corneal Topography

Clark¹

1973

Clinical and Experimental Optometry

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The failure of conventional keratometry and keratoscopy to provide unequivocal or sufficiently accurate indications of corneal topography has led to the development of several alternative methods. These less common methods are discussed, and the conclusion is reached that they also have not yet allowed the measurement of corneal topography to the accuracy desirable for quantitative studies of contact lens fit and the image‐forming properties of the cornea.

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Autocollimating Photokeratoscope

Clark

1972

J. Opt. Soc. Am.

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Gedanken über den Bau eines Hornhaut-Interferometers

Cited by 3 publications

References 0 publications

Some Experiments in Corneal Interferometry

Some Experiments in Corneal Interferometry

Less Common Methods of Measuring Corneal Topography

Autocollimating Photokeratoscope

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