Sunglasses for retinintis pigmentosa patient

**twoopticians** · 10-15-2013, 02:39 PM

i am looking for advice about what the newest & greatest ting is for these patients. Anyone tried the new prevenzia crizal yet? If i use prevenzia, it blocks blue light, should i still do a tint? What do you think about drivewear with the prevenzia?

**Uncle Fester** · 10-17-2013, 11:27 AM

Call BPI.

Ask if the Diamond Dye 550 is compatible with a sun tint or mirror.

Not sure if the principle of blocking up to 550nm is out on anything new.

http://www.callbpi.com/Therapeutic_Tints.html

**CCGREEN** · 10-17-2013, 12:04 PM

Yes I have ordered 3 or 4 pair of lenses with the Prevenzia coating. I'm personally not really excited about it because it really has a very noticeable reflection of the bluish purple color coating on the front of the lens. I'm thinking that the patient will not like that. Other then that, hey its another coating that flilters reflections pretty good. Just supposed to help filter the blue light ray a bit better.

**kentmitchell1961** · 10-17-2013, 12:32 PM

Prevenzia does the job well, I have a pair with it on and it seems to work. The purple is not always noticeable, only when it is doing it's job, such as under florescent lights and all.....

**Uncle Fester** · 10-17-2013, 01:11 PM

Kent- Do you have RP? I think you may have mentioned it in the past but I'm not sure.

If so I assume you still need the blue filter with Prevnzia on sunwear. Yes?

**kentmitchell1961** · 10-17-2013, 01:20 PM

No I am free of RP. The last place I worked was a testing ground for prevenzia and I was chosen as a progressive wearer to play with it. I liked the coating but it was on a physio enhanced and I am not a fan of the lens so don't wear them anymore.

**Chris Ryser** · 10-20-2013, 07:01 AM

Originally Posted by Uncle Fester

Call BPI.

Ask if the Diamond Dye 550 is compatible with a sun tint or mirror.

Not sure if the principle of blocking up to 550nm is out on anything new.

http://www.callbpi.com/Therapeutic_Tints.html

So far nobody has hit the nail on its head...........................................

Retinitis pigmentosa can run in families. The disorder can be caused by a number of genetic defects.

The cells controlling night vision (rods) are most likely to be affected. However, in some cases, retinal cone cells are damaged the most. The main sign of the disease is the presence of dark deposits in the retina.

The main risk factor is a family history of retinitis pigmentosa. It is an uncommon condition affecting about 1 in 4,000 people in the United States.

So why do you guy's want to sell them blue blockers or other sunglasses ????????????????

**Trip** · 10-20-2013, 07:51 AM

Originally Posted by Chris Ryser

So far nobody has hit the nail on its head...........................................

So why do you guy's want to sell them blue blockers or other sunglasses ????????????????

Chris wouldn't you want to protect the retina as much as possible? Obviously not restoring night vision or other visual enhancements but protective of an at risk region.

**racethe1320** · 10-20-2013, 02:15 PM

http://blutechlenses.com/

Good stuff. Worth looking into.

**Chris Ryser** · 10-21-2013, 01:09 AM

Originally Posted by Trip

Chris wouldn't you want to protect the retina as much as possible? Obviously not restoring night vision or other visual enhancements but protective of an at risk region.

Actually the first one step blue blocking dye, (100% UVv and blue light absorbtion) for optical lenses was my invention in 1983, so I am very familiar with protecting the eye and its retina in just about every way.