Inexpensive Stylish Light Weight Myopia Glasses for Spare Use, Unisex Product Video: https://youtube.com/shorts/9fg3UzGAc5Q?si=0Y8BaXXKKu8PZTfc Safety Approved by the China Government. Myopia Degree (0 to 500 Degrees) Both Eyes (Degrees) 50 100 150 200 250 300 350 400 450 500