Had an interesting conversation with my Optometrist about sun glasses, UV, and macular degeneration.
First off, MD is bad news. It means the retina is deteriorating and you will eventually become blind! It usually starts out as a defective spot on the retina which results in a void ( a black spot) in the center of your vision. As the desease progresses, the spot gets larger and eventually you are left with only periferal vision.
Sound bad? You bet! Big time!
O.K. There are two types of MD. Dry and wet. Dry type is due to the effects of UV and fair skinned, blue eyed people are the most vulnerable. (Sorry Blonde, but that's the way it is)
The best prevention is to ALWAYS
wear good (sun) glasses when you go outside during daylight, overcast or not.
Now, the definition of "good" glasses are as follows:
[list=1][*]All glass will filter 100% of the ultra vioilet spectrum.[*]Polycarbonate lenses will also filter out 100% of the UV spectrum.[*]CR39 and Acetate, (less expensive plastics) will only filter out UV [B]if[B/] a special UV coating has been applied.[/list=1]
So, even if you are driving your car and not wearing glasses of any kind, you are protected. It does not matter if the glass(es) are polarized, tinted, or what color tint has been applied.
The wet type MD is caused by insuffient blood flow thru the retina.The retina is a delicate, multilayered, light-sensitive membrane lining the inner eyeball and connected by the optic nerve to the brain. Delicate as like a thick cobweb!
This type of MD is usually the result of other problems such as diabetes, alchohol, drug abuse or [B]smoking[B/].
Anything that leads to *ucking up your arteries.
Take care of yourself folks! Life, as we know it, will not exist if we lose our sight. Maybe "racoon eyes" ain't so bad after all.
Polarized contacts? I could go for that.:eyecrazy: