I was particularly interested in this as one of several potential explanations for the association:
"Lower risk for developing dementia following cataract extraction may also be associated with increased quantity and quality of light. Intrinsically photosensitive retinal ganglion cells (ipRGCs), which are exquisitely sensitive to short-wavelength (blue) light, have been shown to be associated with cognitive function, circadian rhythm, and AD. The ipRGCs project to multiple areas of the brain, and their excitation may trigger widespread cortical activity. The yellow hue of age-related cataracts blocks blue light. Thus, another potential mechanism for which cataract extraction is associated with decreased risk of dementia is the facilitation of ipRGC stimulation by blue light."
I had three surgeries to my left eye this year for glaucoma, and in the third surgery they removed a cataract in that eye at the same time. My right eye is scheduled for mid-January (glaucoma surgery as well as cataract removal). As others have noted above, the difference in perceived colors is striking between my corrected and my uncorrected eye and although I'm not looking forward to the surgery itself I'm really looking forward to having two color-matched eyes and being able to see colors reliably again.
It’s my pleasure. Nice little benefit for having your vision improved! Here’s to a successful right eye procedure. There have been plenty of advances in glaucoma treatments and surgeries in the past few years like minimally invasive procedures and implantable long lasting meds for glaucoma and macular degeneration.
Better living through science.
Dec 13, 2021 at 01:33 PM
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