H.Single Vision 1.74 High Index Lenses Clear

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Material:  1.74 Hi Index

Best Frame Types: ALL

Best Prescription Range (Recommendation Only):  -20.00 to +15.00

Doctor Prescribed Prism: ANY-Okay to Drill

Bifocal Power Range:  NA

Fitting Height Minimum:  NA

Lens Technology:  Composite Resin

                                  "Ultra Thin and Light" MR-174

                                   Essilor Brand

                                   Seiko Brand

                                   Nikon Brand

Features and Benefits: 

• 55% thinner than Plastic
• Good Optics
• High Chromatic Aberration
• Moderate Impact Resistance
• UV protection
• Non chemical reacting
• Front side scratch coated
• One year warranty

Color Options:  Clear

Technical Data:        

• Refractive index (n_d): 1.73
• Abbe value (V_d): 33
• Density: 1.47 g/cm³
• UV cutoff: 380 to 400 nm