Method of making and prescribing tinted lenses

摘要

Methods of fabricating and prescribing lenses suitable for color blindness and dyslexia correction are disclosed. The corrective lens may be formed of an optically transparent base material, which is tinted to a desired color for correction by immersion in a colorant dye. The color tinted lens is then tinted by a neutral tint dye to render the lens observable as a regular corrective lens. Prescription of such lenses may be based on a dynamically balanced, or haploscopic, fashion of prescription that comprises selecting a first visual filter from a set of sixteen filters and a second visual filter from the remaining set of fifteen filters, the first for the dominant eye and the second for non-dominant eye.

主权项

1. A method of fabricating a lens comprising:
(a) forming a lens from a material of relatively open molecular structure; (b) first, tinting the lens to a desired corrective color with an ophthalmic dye, wherein the ophthalmic dye is heated to obtain a heated ophthalmic dye and the lens is immersed in the heated ophthalmic dye so that the heated ophthalmic dye penetrates the lens molecular structure; and (c) second, dyeing the lens with a neutral dye that transmits about 60% or more of incident light across the visible spectrum, wherein the neutral dye is heated to obtain a heated neutral dye and the lens is immersed in the heated neutral dye so that the heated neutral dye penetrates the lens molecular structure, such that the neutral dye is concentrated primarily at surface regions adjacent exterior surfaces of the lens, and provides the lens with a neutral color appearance.