5a grade high light transmission anti-blue light lens class 9a anti-blue light reading glasses [no fatigue when looking at mobile phones]] (grade c ordinary film)

100 degrees [suitable for 45-49 years old]] 150 degrees [suitable for 50-54 years old]] 200 degrees [suitable for 55-59 years old]] 250 degrees [suitable for 60-65 years old]] 300 degrees [suitable for 65-69 years old]] 350 degrees [suitable for 70-74 years old]] 400 degrees [suitable for over 75 years old]]