Normal Adaption - Replacing the crystalline lens with an artificial intra ocular lens increases blue light transmission. Patients often comment that everything looks ‘blue’ after cataract surgery. This is normal and brain adapts to this in some time.
Blue light blocking IOL (Intra Ocular Lens) - In special situations like those where patients have pre-existent Age Related Macular Degeneration (ARMD) it may be wise to go for IOL’s which have a selective blue light reducing/blocking effect.
Cognitive function in elderly population – Blue light transmission increases after a cataract surgery and that may improve the sleep wake cycle, mood and cognitive functions like reaction times etc. Aging is associated with insomnia, depression and cognitive decline.