I suffer from myopia( short sightedness) and require glasses to identify people at distance or to read from distance. I went for crizal as I was suggested that it was scratch resistance, protects from diplay radiation from computers, anti glare and so on. After using it for 2 weeks I feel no difference between my previous lens and this one. I still get headaches and have to remove my specs to relieve myself. I use it only when I am outside, roaming and traveling. Despite maintaining it well protected and cleaning it with warm water and drying it, it has developed some scratches.Not satisfied and Hoping some improvement in the product in future.