- Brand Name : Aogang
- Model Number : Photochromic Progressive Lens
- Lenses Material : Resin
- Vision Effect : Progressive
- Coating : HMC
- Lenses Color : Grey/Brown
- Diameter : 75mm
- Monomer : NK55, imported from Japan
- Abbe value : 37.5
- Specific Gravity : 1.28
- Guarantee : 5-year
- Corridor length : 12/14mm
- Power Range : SPH:-4.00~+3.00 ADD:+1.00~+3.50
- Key Words : Progressive Optical Lenses
- Other name : 1.56 photochromic progressive lens
- Usage : photochromic progressive lenses