Results 181 to 190 of about 126,096 (212)
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THE EFFECT OF CONTACT LENS DIAMETER AND POWER ON FLEXURE AND RESIDUAL ASTIGMATISM
American journal of optometry and physiological optic, 1974ABSTRACT Contact lens flexure and the associated residual astigmatism were measured, with bord (PMMA) corneal lenses of various diameters and powers, on corneas of various toricities. Varying contact lens diameter did not alter lens flexure or residual astigmatism on any of the corneas.
M G, Harris, T D, Appelquist
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The measurement of rigid contact lens diameters
Journal of The British Contact Lens Association, 1987Abstract Four methods of measuring rigid contact lens diameters were investigated. A calibration method is described. Ahigh quality V-slot gauge was found to be the most effective method of measuring lens diameters and the band magnifier the least. A tolerance on lens diameter of less than 0.1mm appears to be impractical.
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THE EFFECT OF CONTACT LENS THICKNESS AND DIAMETER ON RESIDUAL ASTIGMATISM
American journal of optometry and archives of American Academy of Optometry, 1970ABSTRACT The flexure of contact lenses of various thicknesses and diameters and the associated residual astigmatism were measured on two spherical and two toric corneas. No significant results were found on the spherical corneas.
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Uniocular Conjunctivochalasis and larger diameter PROSE lens
Clinical and Experimental Optometry, 2021Sona, Paul +2 more
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High-capacity wavelength demultiplexer with a large-diameter GRIN rod lens
Applied Optics, 1982A high capacity (twelve-channel) fiber optic wavelength demultiplexer incorporating a large diameter GRIN rod lens and grating was developed and fully characterized. The demultiplexer operates over the 740-930-nm wavelength range with an average channel spacing of 17 nm.
B D, Metcalf, J F, Providakes
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A closer look at Hamiltonicity and domination through the lens of diameter and convexity
Acta InformaticazbMATH Open Web Interface contents unavailable due to conflicting licenses.
R. Mahendra Kumar, N. Sadagopan
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Optimisation of magnetic lens with pole-piece of finite inside diameter
Journal of Physics D: Applied Physics, 1982The relation between the coefficients of spherical and chromatic aberration of round magnetic lenses and the flux distribution over a cylindrical surface that touches the pole-piece at some point is studied. The magnetic flux density distribution over the cylindrical surface is approximated by a polygonal line, and the successive approximation is used ...
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Experience with a Short Diameter Lens
Journal of Cataract and Refractive Surgery, 1988openaire +2 more sources