Light filter for the improvement of vision

Details Light filter for the improvement of vision Light filter for the improvement of vision

G - Physics

02

B

88/121

G02B 5/22 (2006.01) G02C 7/10 (2006.01)

Patent

CA 2002560

ABSTRACT A light filter for the improvement of vision, the light filter has a mean transmittance of at most 20% in the 380 to 450 nm spectral range, and a mean transmittance of at least 40% in the 450 to 550 nm spectral range. This results in a substantial improvement of the vision of people whose eye lenses have cataracts and of people with retina-related weakness of vision, above all in the low-contrast field.

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