Contact Lens Optics and Lens Design
This title is directed primarily towards health care professionals outside of the United States. The 3rd edition of Contact Lens Optics & Lens Design provides a straightforward introduction and offers solutions to the vast majority of contact lens optics problems likely to be encountered in practice. This edition has been thoroughly updated and contains integral coverage of soft lenses, information on the latest corneal measuring techniques, and expanded coverage of astigmatism and corneal toricity. It includes a new chapter on presbyopia and separate treatment of orthokeratology. Also included on the CD-ROM, is a set of invaluable computer programs, which allow the users to bypass tedious calculations in arriving at best fits.
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Acuvue anisometropia apical radius aspheric astigmatism axial edge lift axial thickness bicurve bifocal BOZD BOZR Calculate command button central centre thickness click the mouse conicoidal contact lens contact lens back corneal astigmatism corneal meridian corneal topography correcting lens cylinder DC axis dioptres Douthwaite edge clearance edge thickness equation example ﬁt ﬁtted flat meridian flatter fluid lens power focimeter front surface radius harmonic mean illustrated in Figure induced astigmatism keratometer keratometry Left click lens back surface lens BVP lens design lenses light rays magniﬁcation measurement mire image modiﬁcation myope myopia negative orthokeratology overall sag p-value peripheral curve peripheral radius plane positive principal meridians prism produce pupil radii radius of curvature refractive error refractive index retinal image scleral scleral lens screen display soft lens speciﬁcation spectacle lens spectacle magnification spherical aberration steep meridian surface power tricurve vergence vergence L4 vertex distance wavefront windows and type