Amazon has the GUNNAR Spider-Man: Miles Morales Edition Premium Gaming Glasses (CRU-11913) on sale for $14 with free shipping on $35+ or with Prime. For ages 12 and up. 

Protects against symptoms stemming from prolonged screen-staring including migraines, headaches, dry eyes, blurry vision, cataracts, macular degeneration (AMD) and negative effects of blue light exposure.