Scleral Lens Posterior Surface Wavefront Modification
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Solution Overview
Problem
Conventional contact lenses, particularly corneal lenses, fail to effectively reduce or eliminate higher order aberrations in the eye, leading to issues like glare and double vision, and may cause irritation, while existing scleral lenses do not adequately address these aberrations and can be uncomfortable.
Innovation Solution
A method for manufacturing scleral lenses that involves generating dimensions based on the eye's shape, identifying alterations in wavefronts of light using Zernike polynomials, and applying modifications to the posterior surface of the lens to equalize optical paths, thereby reducing higher order aberrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If scleral contact lenses are designed to vault the cornea and pupil, then corneal irritation is reduced, but higher order aberrations are not adequately addressed
Solution Approach 1:
The patent applies local quality by creating zone-dependent modifications on the posterior lens surface, where different regions have different optical powers tailored to correct specific higher order aberrations while maintaining the overall scleral vaulting geometry that protects the cornea
Solution Approach 2:
The patent changes the optical parameters of the lens by incorporating zone-dependent modifications that alter the refractive power in different regions of the posterior surface, enabling correction of higher order aberrations while preserving the scleral contact lens configuration
2Ease of manufacture
If conventional scleral lenses are manufactured with standard designs, then manufacturing is simplified, but individual eye aberrations are not adequately corrected
Solution Approach 1:
The patent applies preliminary action by performing wavefront aberrometry and calculating zone-dependent modifications before lens manufacturing, allowing custom化的 aberration correction to be integrated into the lens design process while maintaining systematic manufacturing procedures
Solution Approach 2:
The patent replaces manual trial-and-fit lens selection with an automated optical system that uses wavefront aberrometry and computerized calculations to determine precise lens parameters, substituting mechanical fitting processes with optical measurement and computational design
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 approach significantly reduces higher order aberrations, improves visual acuity, and provides a more comfortable fit by minimizing irritation, with enhanced scleral lenses achieving greater reductions in aberrations compared to conventional designs.
Implementation Method 1
A modification configured to be made to a posterior surface of the scleral lens is generated based on the alteration. The modification removes the alteration for a second wavefront of light traveling through the scleral lens and the pupil of the eye.
Implementation Method 2
applying modifications to the posterior surface of the lens to equalize optical paths, thereby reducing higher order aberrations
Data Source
AI summary
The different illustrative embodiments provide a method, computer program product, and apparatus for manufacturing a scleral contact lens. A number of dimensions for the scleral lens is generated based on a shape of an eye. An alteration to a first wavefront of light caused by the first wavefront of light traveling through a pupil of the eye is identified. A modification configured to be made to a posterior surface of the scleral lens is generated based on the alteration. The modification removes the alteration for a second wavefront of light traveling through the scleral lens and the pupil of the eye.