Special filter sunglasses

Most RPers suffer from glare (especially if they have cataract as well).

So a good pair of sunglasses that will block UV and glare could be very appreciated.

Start by trying some eyeglasses in a supermarket and buy an inexpensive pair of sunglasses (but make sure they have UV filter (very important) and are of a decent quality). Then experiment and try another pair. Try those that will block the light from the side as well. And remember to have a baseball hat or something that will shade your face.

If you need eyeglasses for distance, you will need sunglasses that accept prescription lenses or you could try some flip-on filters over your eyeglasses or some "fitovers" (a pair of sunglasses that will fit over your normal eyeglasses). NoIr is a good example of fitovers (http://www.noir-medical.com/) but there are many more manufacturers.

Remember, choosing a filter is a very personal choice, so make sure you try your filter before buying. Some filters may be preffered by some RPers but there is no general rule (for example, I have the http://www.noir-medical.com/filters/533.html that are labeled "for RP patients" but this means only that some RP patients like this filter, other may not).

About blue light and LEDs

Here's a study called "Colored lenses suppress blue light-emitting diode light-induced damage in photoreceptor-derived cells": http://biomedicaloptics.spiedigitallibrary.org/article.aspx?articleid=2506991

The cultured cells were exposed to blue light LEDs, some protected by different filters. Results: "The rate of cell death in the no-lens group was observed to increase by 7% to 12%. The rate of cell death in the Y50 filter, YE, SYD, OO, OG, GN, SY, and PN lens groups was significantly decreased in comparison with the no-lens group. The rate of cell death in the reflective coating lens group did not show any decrease as compared with the no-lens group.".