Blue-blocking spectacles lenses for retinal damage protection and circadian rhythm: evaluation parameters

TL;DR

This paper evaluates blue-blocking spectacles lenses by defining indices that measure their protection against retinal damage and circadian disruption, aiding in selecting appropriate lenses for different lighting conditions.

Contribution

It introduces two novel indices to quantify blue light protection for retinal health and circadian rhythm, facilitating better lens selection.

Findings

Defined protection indices for retina and circadian cycle

Provided a framework for comparing blue-blocking lenses

Enhanced understanding of lens effectiveness under various lighting

Abstract

There is evidence for the effect of blue light on circadian cycle and ocular pathologies. Moreover, the introduction of LED lamps has increased the presence of blue light. In the last two years, many different blue blocking ophthalmic lenses have been introduced. Due to the different effect of blue light on ocular media and circadian rhythm, we have defined two indices that describe the level of protection of the lenses towards the retina and the circadian cycle under different lighting as for example daylight and tablet. These indexes can help in individuating the right lens for ocular protection.