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The effect of defocus incorporated multiple segments (DIMS) spectacle lenses on astigmatism in children with myopia. [PDF]

Sci Rep
Wang Y, Ouyang L, Chen S, Chen K, Xiong H.   +4 more
europepmc   +1 more source

Soft lenses v/s hard lenses.

Indian journal of ophthalmology, 1975
openaire   +2 more sources

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Kinoform Lenses

Applied Optics, 1970
A technique for accurately figuring very thin, lightweight lenses is discussed. The phase change required to focus a plane wave into a point is calculated and photographically plotted with exposure proportional to phase (scaled from 0 to 2pi). The plot is photoreduced and the photoreduction is etched, with the depth of etch approximately proportional ...
J A, Jordan, P M, Hirsch, L B, Lesem, D L, Van Rooy   +3 more
openaire   +2 more sources

CONTACT LENSES

Lancet, The, 1937
A. Rugg-Gunn, F. A. Williamson-Noble, I. Mann   +2 more
exaly   +2 more sources

Ultraviolet-Absorbing Spectacle Lenses, Contact Lenses, and Intraocular Lenses

Optometry and Vision Science, 1990
Optical materials that are available to the practitioner for protection of the eye against hazardous exposure to ultraviolet radiation (UVR) are discussed. Principles of protection, procedures for calculating safe ocular exposure duration, and transmittance curves of commonly prescribed spectacle lenses, contact lenses, and intraocular lenses are ...
openaire   +2 more sources

Pseudoaxicon lenses

Applied Optics, 1989
In classical aberration theory it is assumed that, in a centered system, each surface can be represented in even powers of the radial distance from the axis. When this is not the case, a modified aberration theory must be used.
openaire   +2 more sources