I state (and repeat) that Noisyvision is not a scientific website and information are based on experience and research of individual editors. However I decided to deal with this issue because we are trying to cover a range of different topics: medical, behavioral, psychological, perceptual, linked to retinitis pigmentosa (and hearing loss, since Noisyvision refers to Usher syndrome, although in this case we are dealing with an issue purely ophthalmological).
Ultraviolet radiation have great energy, which could create conditions of photooxidation stress resulting in cortical cataracts, conjunctivitis and deterioration of retinal diseases. As the blue light and ultraviolet worsen retinitis pigmentosa many ophthalmologists recommend ultraviolet filters on amber lenses for glasses to wear during the day, in order to slow the progression of this disease. However, in this case the solutions are not unique, because the different stages of progress and the presence of other complications direct the choice of glasses with different colors, shades and other characteristics, as well as to a different use. So the best solution is highly individual and should be the result of a compromise between medical advice and practical needs. Last but not least economic criterions
Cutoff filters lenses
As I said everyone should find his own best solution, but once established that these filters actually improve contrast and reduce harmful radition, you must choose the most suitable to combine the protection from ultraviolet radiation with optimal light conditions.
In my case, for example, light color lenses allow me to see when the sky is cloudy and dark lenses reduce glare.
I use the amber. They help a lot but i have to take them off as soon as i go inside
(D.D.S, on Facebook group Retinitis Pigmentosa)
After what has been said it seems unnecessary to treat the topic of common sunglasses, since the amber lenses seem to be the optimal choice in terms of protection, but there are some reasons why not everybody likes these gradations.
I own the gray tinted ones. They work best for me coz when it’s sunny, they block out the sunny-ness that hurts my eyes but still allow enough light to let me see. I did try the amber ones and they were alright but settled on the gray ones. (A.H, on Facebook group Retinitis Pigmentosa)
In my case, for example, glasses with orange lenses have a frame not too wrapping and they do not protect me adequately. They are perfect for snow and cloudy days or with a little haze, but they are also expensive, so I try to limit their use.
For a boat trip two years ago I bought the best on the market in terms of lenses. 500 euros for polarized lenses with cutoff filter. After less than 20 Nmiles they were already on the sea bed. A few years ago I lost a couple of amber glasses, again on the Ocean shore. Not that I want to please the fish or sharks, offering cool glasses, but since I lose and breake them very easily, even for the very problem of the reduced field of vision that does not allowme to identify obstacles above my head, I decided to buy the much deprecated sunglasses at the market stalls.
When you buy a pair of cheap sunglasses , often you wave the benefits of a good lens. For example, if your sunglasses offer no UV protection, it increases the exposure to UV rays. The cheap sunglasses block some of the light, causing the opening of the diaphragm to allow access to a bigger amount of light. This will cut down the natural barrier for the eye from UV radiation, increasing the possibility of causing damage to the retina.
However, for how little can be reliable a label with the CE mark applied on the lens and the confirmation of effective UV protection, it seems that even though they cost 5 or 10 euros that label is a guarantee and make them comparable to hundreds of euros glasses purchased at the optician.
Possibly could be the difference in the material of the frame, which can cause allergies and the lens, if they breake they could be harmful to the eye.
I certainly do not encourage the purchase of cheap glasses, but at least consider the possibility that the high cost of glasses are not only a commercial gimmick.
If it is true that protecting the eyes should be the most important thing, unfortunately you have to deal with the cost that this disease involves and among he variables of the compromise you have to consider also the money.
Any pair of glasses I buy, I always choose plastic frames, metal ones are uncomfortable to wear on your head when you lift them up for a brighter vision.