• Daytime Clear Lens – 30% Blue Light Filtering:
  Reduces blue light from screens and lights during the day, easing eye strain while keeping colors natural. Best for daytime use to maintain alertness.
• Daytime Yellow Lens – 70% Blue Light Filtering:
  Blocks more blue light than clear lenses, giving better protection during extended screen use. Great for reducing eye strain and improving focus during the day.
• Night-time Amber Lens – 99% Blue Light Filtering:
  Almost completely blocks blue light, ideal for use in the evening to help wind down and promote better sleep by limiting blue light exposure that disrupts melatonin production.
• Night-time Red Lens – 100% Blue & Green Light Filtering:
  Completely blocks both blue and green light, making it perfect for nighttime use to fully protect your sleep cycle and prevent disruptions from any artificial light.

There is a unit called the abbe value which refers to optical clarity, the higher value the more clarity of the lens. Most cheaper anti blue light glasses on the market have a very reflective blue coating and are made with PC (Polycarbonate) which are rated as the lowest optical clarity of lens material available. Below are the differences in value –

CR-39 – 58

PC (Polycarbonate) – 30

Urban Hippee’s CR-39 lens have anti reflective coating and have almost double the clarity of others available on the market. They have been tested to block up to 100% harmful blue light from 400nm to 550nm.

Put on your red or amber colored lens glasses. If the blue circle color turns black, this will indicate that your glasses are effectively filtering all blue light. 

This test will not work for our daytime glasses.

1. Daytime Clear Lens (30% Blue Light Filtering):
   Wear these throughout the day while working on screens, indoors, or under artificial lighting. They’re ideal for reducing eye strain during daylight hours without significantly impacting your alertness or circadian rhythm.
2. Daytime Yellow Lens (70% Blue Light Filtering):
   Use these lenses during the day for more intense screen time or in bright environments. They’re best for prolonged screen work, especially if you’re prone to eye fatigue or discomfort from digital devices.
3. Night-time Amber Lens (99% Blue Light Filtering):
   These should be worn 2-3 hours before bed to reduce blue light exposure, which can interfere with melatonin production and disrupt sleep. Use them in the evening while watching TV, using a computer, or checking your phone, to help prepare your body for sleep.
4. Night-time Red Lens (100% Blue & Green Light Filtering):
   For maximum sleep support, wear these 2-3 hours before bed to completely block blue and green light. These lenses are ideal for night-time screen use or exposure to artificial lighting before sleep. They fully protect your sleep cycle, helping you wind down effectively.

Wearing the right glasses at the right time ensures better eye health and promotes restful sleep.