Optical Filter Layer for Intraocular Lens Light Sensitivity
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Solution Overview
Problem
Implanted intraocular lenses (IOLs) cause increased light sensitivity in patients due to their thinner shape and material, leading to unusually bright perceived light intensity, which can impair acute vision and daily activities.
Innovation Solution
An optical filter system is applied to the IOL, including neutral density, chromatic, photochromatic, and polarizing filters to selectively or constantly reduce light transmission, attenuating specific areas of the visible spectrum and minimizing light intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an intraocular lens is implanted to correct vision, then vision correction is achieved, but light intensity increases causing brightness sensitivity
Solution Approach 1:
An optical filter layer is introduced as an intermediary between the intraocular lens and the retina. This filter layer selectively attenuates light transmission while maintaining the vision correction function of the IOL, thereby resolving the contradiction between vision correction and excessive light intensity
Solution Approach 2:
The optical filter layer is applied selectively to specific regions of the intraocular lens, allowing different parts of the lens to have different optical properties. This enables localized control of light transmission to achieve both vision correction and light intensity management
2Shape
If the intraocular lens is made thinner to improve optics, then optical performance improves, but light absorption decreases causing increased brightness
Solution Approach 1:
The intraocular lens system combines the thin IOL material with an optical filter layer, creating a composite structure. The thin IOL provides optimal optical performance while the filter layer compensates for reduced light absorption, achieving both goals simultaneously
Solution Approach 2:
The optical properties of the lens system are modified by changing the parameters of the filter layer, such as its absorption coefficient and thickness. This allows control of light transmission to achieve desired brightness levels while maintaining thin IOL 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 optical filter system effectively reduces light intensity for IOL patients, mitigating the adverse effects of increased brightness and improving their ability to perform routine tasks requiring acute vision.
Implementation Method 1
the optical filtering layer may at least partially filter light through the intraocular lens
Implementation Method 2
The at least one optical filtering layer may include one or more of various different types of optical filters, including a neutral density filter, a chromatic filter, a photochromatic filter
Data Source
AI summary
An apparatus, system and method for providing an optical filter for an intraocular lens. The apparatus, system and method may include at least one optical filtering layer applied to at least one surface of the optic, wherein the optical filtering layer may at least partially filter light through the intraocular lens. The at least one optical filtering layer may include different types of optical filters including a neutral density filter, a chromatic filter, a photochromatic filter, and a polarizing filter. These filters may be used to reduce the transmission of light through the intraocular lens.