Safety helmet visor with a treated surface for eye protection and therapy
The invention is a filtering, transparent device for preventing damage to healthy eyes and for the prophylaxis and therapy of pseudophakic eyes and/or eyes with macular and retinal neurodegeneration and is the result of applying a yellow filter to the transparent or translucent surface(s) of the visor of a protective helmet, to protect the eyes from the short wavelengths of the visible spectrum (500 to 380 nm). The invention avoids the difficulties and risks of existing ways of protecting healthy eyes or eyes subjected to cataract surgery, and improve the protection of eyes suffering retinal neurodegeneration, simply by applying a filter to the transparent or translucent surface(s) of the visor of any protective helmet. The invention consists of combining the transparent or translucent surface(s) of the visor of any protective helmet with a yellow filter that absorbs short wavelengths of light from 500 to 380 nm.
1. A method for protecting a subject having a pseudo-aphakic eye implanted with a transparent intraocular lens in an activity during which the eye is exposed to short wavelengths of light, the method comprising the steps of:
(a) providing a helmet with a protective visor comprising a yellow dye that absorbs wavelengths of light from 500 to 380 nm; and
(b) putting the helmet on the head of the subject so that the visor protects the eye from the short wavelengths of light during the activity.
2. The method as claimed in claim 1 , wherein the activity is selected from the group consisting of motorcycle riding, a sport and welding.
3. The method as claimed in claim 1 , wherein the activity is a water sport or skiing.
4. The method as claimed in claim 1 , wherein the activity is one in which the subject is exposed to intense light.
5. The method as claimed in claim 1 , wherein the protective visor is provided by applying a filter comprising the yellow dye to a surface of a transparent or translucent visor and the protective visor is then fitted to the helmet.
6. The method as claimed in claim 5 , wherein the yellow dye comprises 4-phenylazophenol.
7. A method for protecting a subject having an eye with retinal neurodegeneration in an activity during which the eye is exposed to short wavelengths of light, the method comprising the steps of:
(a) providing a helmet with a protective visor comprising a yellow dye that absorbs wavelengths of light from 500 to 380 nm; and
(b) putting the helmet on the head of the subject so that the visor protects the eye from the short wavelengths of light during the activity.
8. The method as claimed in claim 7 , wherein the activity is selected from the group consisting of motorcycle riding, a sport and welding.
9. The method as claimed in claim 7 , wherein the activity is a water sport or skiing.
10. The method as claimed in claim 7 , wherein the activity is one in which the subject is exposed to intense light.
11. The method as claimed in claim 7 , wherein the protective visor is provided by applying a filter comprising the yellow dye to a surface of a transparent or translucent visor and the protective visor is then fitted to the helmet.
12. The method as claimed in claim 11 , wherein the yellow dye comprises 4-phenylazophenol.