I recently came to face some problems with my specs the I consult my doctor he suggest to take crizal lens.I am using this since 1 week it is very smooth the lens are very good they are easy to use can carry every where and it is scratch free.The lens are very comfortable and it is can be use in occasions, party, collage, weeding anywhere.The value of the crizal lens are also very affordable.It is very good product from medical science.