Description Features Yellow Lens Daytime Glasses Our DayMax Blue Light Glasses are specifically designed for those having significant exposure to artificial blue light during the day, they feature our specialised light yellow lenses which provide maximum blue light protection, while still helping you maintain your energy and focus when you need to feel and perform your best. The light yellow DayMax lenses filter 70% of blue light across the entire blue light spectrum (400nm-500nm), providing maximum protection to eliminate light sensitivity, migraines, eye strain, sore and tired eyes, headaches/migraines from both screen time and bright LED or fluorescent lighting in the home/workplace. The DayMax lens uses propriety filtering technology to block 100% of blue light in the lower range of 400 - 455 nanometers; this is the most energetic and damaging light emitted from screens and lighting. More importantly it still allows all the beneficial blue light through still which is in the later part of the spectrum from 455-500nm, this blue light is essential during the day for optimal hormone production, energy, positive mood, and motivation.  To ensure you have both day AND night protection, we recommend you also use a set of our Night-time Blue Light Blocking Glasses during night-time to ensure deep and restful sleep. Filters 70% of harmful artificial blue light across the entire blue light spectrum Blocks 100% of harmful blue light from 400-455nm, then allows all beneficial blue light through from 455nm-500nm Premium frame made from high quality, lightweight aluminium with durable spring hinges. DayMax light yellow lens - made with optical grade CR-39 to provide highest visual acuity Stops headaches and migraines, blurred vision, eye strain, and minimises risk of macular degeneration Daytime lens designed to provide maximum blue light protection Dimensions: Lens Width - 52mm Lens Height - 50mm Arms - 140mm Bridge - 19mm