Protector Role of Intraocular Lenses under Artificial Light Conditions
Andrés Fernández-Vega Cueto1,2, Susana Del Olmo-Aguado1,3, Eva García-Pérez2
1University Institute Fernández Vega, Ophthalmologic Research Foundation, University of Oviedo, Oviedo, Spain.
Ophthalmic Research
|December 9, 2021
Summary
Ultraviolet- (UV) and blue-light filtering intraocular lenses (IOLs) do not protect against artificial light damage in lab tests. Other IOL factors beyond filtering may be crucial for photoprotection.
Area of Science:
- Ophthalmology
- Biomedical Engineering
- Cell Biology
Background:
- Artificial light sources like LEDs emit blue light, potentially causing cellular damage.
- Intraocular lenses (IOLs) are implanted during cataract surgery to restore vision.
- UV- and blue-light filtering IOLs aim to mitigate light-induced retinal damage.
Purpose of the Study:
- To evaluate the in vitro photoprotective effects of UV- or UV/blue-filtering intraocular lenses (IOLs).
- To assess IOL performance under light-emitting diode (LED) lighting conditions.
Main Methods:
- Ten IOL models' light transmission spectra were analyzed from 300-800 nm.
- ARPE-19 cells were exposed to blue LED light (465-475 nm) to induce photodamage.
- Cell viability and oxidative stress markers were measured to determine IOL protective effects.
Main Results:
- UV/blue-filtering IOLs demonstrated varying degrees of blue light spectrum blockage.
- UV-filtering IOLs blocked wavelengths below 400 nm.
- No significant photoprotective effects were observed for UV/blue-filtering IOLs against blue LED light-induced mitochondrial dysfunction or oxidative stress.
Conclusions:
- Current in vitro findings suggest UV/blue filtering IOLs offer limited photoprotection under artificial light.
- Further research should consider additional IOL parameters, not solely filter type, for optimal protective roles.
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