Blue Light is Good!
And there’s a lot of false advertising out there
Blue Light Filters/“Blue-Blocking” Glasses
https://www.ajo.com/article/S0002-9394(22)00072-1/fulltext
The blue light hazard is the experimental finding that blue light is highly toxic to the retina (photic retinopathy), in brief abnormally intense exposures, including sungazing or vitreoretinal endoillumination. This term has been misused commercially to suggest, falsely, that ambient environmental light exposure causes phototoxicity to the retina, leading to age-related macular degeneration (AMD). We analyze clinical, epidemiologic, and biophysical data regarding blue-filtering optical chromophores.
Large epidemiologic studies show that blue-blocking intraocular lenses (IOLs) do NOT decrease AMD risk or progression.
Blue-filtering lenses cannot reduce disability glare because image and glare illumination are decreased in the same proportion.
Blue light essential for optimal rod and retinal ganglion photoreception is decreased by progressive age-related crystalline lens yellowing, pupillary miosis, and rod and retinal ganglion photoreceptor degeneration.
Healthful daily environmental blue light exposure decreases in older adults, especially women. Blue light is important in dim environments where inadequate illumination increases risk of falls and associated morbidities.
SUMMARY
The blue light hazard is misused as a marketing stratagem to alarm people into using spectacles and IOLs that restrict blue light. Blue light loss is permanent for pseudophakes with blue-blocking IOLs. Blue light hazard misrepresentation flourishes despite absence of proof that environmental light exposure or cataract surgery causes AMD or that IOL chromophores provide clinical protection. Blue-filtering chromophores suppress blue light critical for good mental and physical health and for optimal scotopic and mesopic vision.
https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD013244.pub2/full
How do you treat recurrent corneal erosions?
Acutely, medical management of corneal erosions involves using antibiotic eyedrops and/or ointment, and your doctor may place a bandage contact lens in the eye. This contact lens may blur your vision, and during the healing process you may notice/feel fluctuations/distortions in your vision. Your doctor may have you wear this contact lens for several weeks at a time.
How do you prevent recurrent corneal erosions?
In general, keeping your eyes lubricated and moist are the easiest way to prevent recurrent corneal erosinos from occurring. Using a lubricating eye ointment at night time, or a hypertonic saline eye ointment at night time (muro 128) will also often help reduce the chance of developing erosions. However, many patients still have recurrent corneal erosions in spite of these preventative measures and will require long term treatment.
An eye exam is the best way to screen for, and evaluate any eye conditions affecting your health, comfort, and quality of vision.