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Ultraviolet-blocking intraocular lenses: fact or fiction

Purpose of review Ultraviolet-blocking intraocular lenses (IOLs) are used routinely in cataract surgery and are widely accepted. Blue-blocking IOLs, however, have been much debated since their inception. In this article, we will review the advantages and disadvantages of blue-blocking IOLs. Recent findings In experimental and animal studies, acute blue light exposure induces retinal damage and the use of blue-blocking IOLs lessens this damage. Many large epidemiologic studies have further investigated this relationship between blue light exposure and the development of age-related macular degeneration, and have shown conflicting results. Visual performance and circadian rhythm disturbances have also been explored in patients with blue-blocking IOLs; no significant negative effects have been shown. Summary The current literature on blue-blocking IOLs is contradictory. Studies have failed to conclusively prove that blue-blocking lenses provide photoprotection against age-related macular degeneration or cause any significant detrimental effects on visual function or circadian rhythms.