Detailed Product Description CR-39 1.499 optical lenses 1. index: 1.499 optical lenses2. dim.: 65mm3. green color, with HMC+EMI4. material: resin5. power range: -0.00~-8.00/-0.00~-2.00, or as your requirement6. curve: sphere , center thickness: 1.1~2.0mm We can supply optical lenses with high quality as your specs or requirement.