PRESBYOPIA CORRECTION LENSES AND METHODS OF DESIGNING LENSES

摘要

FIELD: physics, optics.SUBSTANCE: set of contact lenses comprises three groups of lenses. Each group consists of composite lenses which provide a spherical power in the range of -12.00 to +8.00 dioptres with an increment of 0.50 dioptres and an additional optical power in the range of about 0.75 to 2.50 dioptres with an increment of 0.25 dioptres. Lenses of the first, second and third groups have, respectively, average monocular weighted distance coefficients d, dand dand average monocular weighted closeness coefficients n, nand n. Each of the lenses of the first, second and third groups have an optical power profile different from that of a lens from another group, wherein d>d>dand n