Dual-filter ophthalmic lens to reduce risk of macular degeneration

摘要: An improved dual-filter lens for protective eyewear that combines a first filter blocking essentially 100% of UV light, and second filtering blue light. The may comprise multi-layered dielectric mirror layer (14) or Rugate (50), the dye-impregnated layer(s) (16, 18) (50). blocks while establishes an increasing transmission profile cuts on sharply at approximately 415 nm, between nm to about 475 nm. cut-on slope rises 0.15% in transmissivity every nanometer wavelength change, with maximum effect within 440-465 range. These dual filters provide balanced light reduces harmful prevents macular degeneration, cataracts other ocular injuries, still preserving visual acuity.