HEV-Filtering Toric Contact Lens for Brightness and Visual Range

Solution Overview

Problem

Existing toric contact lenses do not effectively address astigmatism and improve vision performance, particularly for individuals with astigmatism, and there is a need to improve vision performance.

Innovation Solution

The inclusion of a HEVL filter in a toric contact lens that absorbs HEV light, which improves brightness perception and visual range.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a toric contact lens is used to correct astigmatism, then vision correction is provided, but brightness perception and visual range are not improved

Engineering Contradiction:

Improvevision correctionVSAvoidbrightness perception

Core Design Contradiction:

Measurement precisionVSIllumination intensity

Solution Approach 1:

The patent applies parameter changes by incorporating a HEV light filtering compound that selectively absorbs high energy visible light in the 400-409 nm wavelength range. This changes the optical parameters of the contact lens to filter specific wavelengths while maintaining astigmatism correction, thereby improving brightness perception and visual range without compromising vision correction capability.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses composite materials by combining the toric lens structure (for astigmatism correction) with a HEV light filtering compound (for brightness enhancement). The lens comprises a polymer matrix containing the filtering compound, creating a composite material that simultaneously provides both astigmatism correction and improved brightness perception.

Inventive Principle:

Principle #40Composite materials

2Measurement precision

If a toric contact lens is used to correct astigmatism, then astigmatism correction is provided, but visual range is not improved

Engineering Contradiction:

Improveastigmatism correctionVSAvoidvisual range

Core Design Contradiction:

Measurement precisionVSArea of stationary object

Solution Approach 1:

The patent applies parameter changes by incorporating a HEV light filtering compound that selectively absorbs high energy visible light in the 400-409 nm wavelength range. This changes the optical parameters of the contact lens to filter specific wavelengths while maintaining astigmatism correction, thereby improving brightness perception and visual range without compromising vision correction capability.

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If a standard contact lens is used, then comfort is provided, but HEV light filtering and brightness improvement are not achieved

Engineering Contradiction:

ImprovecomfortVSAvoidbrightness perception

Core Design Contradiction:

Ease of operationVSIllumination intensity

Solution Approach 1:

The patent uses composite materials by combining the toric lens structure (for astigmatism correction) with a HEV light filtering compound (for brightness enhancement). The lens comprises a polymer matrix containing the filtering compound, creating a composite material that simultaneously provides both astigmatism correction and improved brightness perception.

Inventive Principle:

Principle #40Composite materials

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The efficacy of the HEVL filter in a toric contact lens is the inclusion of a HEVL compound that filters light at around 400 nm, which improves brightness perception and visual range.

Implementation Method 1

The lenses of the invention contain a HEVL filter that results in unexpected visual benefits to such patients. It has been discovered, for instance, that the inclusion in a toric contact lens of an HEVL compound that filters light at around 400 nm

Methodology Applied

Scientific EffectLight absorption: Absorption (EM radiation)

Data Source

PatentUS20260003209A1Toric contact lens displaying improved vision attributes

Publication Date: 2026.01.01 JOHNSON & JOHNSON VISION CARE INC

AI summary

Described are toric contact lenses that contain high energy visible (HEV) light absorbing compounds and their use for improving various vision attributes in astigmatic contact lens wearers, such as brightness perception and visual range.