I have been using the Bioptron light for 10 years. I have read two customers' letters and spoken to one woman, all who say that after using the light (polarised, full spectrum) their cataracts disappeared. Apart from everything else imaginable, there were a couple of success stories on glaucoma as well.
Bioptron works at a cellular level. It brings oxygen to the cells and doubles the macrophages to effect rapid healing. I also saved two horses' eyes using the light on them.
Look up www.bioptron.com and go to your country. It's not that cheap - although everywhere is cheaper to buy it than NZ ! - but it will stop your arthritis pain, injuries, cuts and anything else, so it's worth having it in the house. Brilliant for children.