EP 031 with Prescription transition lens index 1.74 with anti blue light

Transition lenses, also known as photochromic lenses, are eyeglass lenses that automatically adjust their tint based on the lighting conditions. 
Key Points about 1.74 Transition Lenses:

1. High Refractive Index (1.74)**:
   - These lenses have one of the highest refractive indices available for eyeglass lenses.
   - A higher refractive index allows the lenses to be thinner and lighter compared to lenses with lower refractive indices, making them particularly suitable for individuals with strong prescriptions.

2. Photochromic Properties:
   - The lenses darken when exposed to UV light (e.g., sunlight) and return to a clear state when indoors or in low-light conditions.
   - This transition happens due to special molecules within the lenses that change their structure in response to UV radiation.

3. UV Protection:
   - Transition lenses provide 100% protection from harmful UVA and UVB rays, helping to protect the eyes from sun damage.

4. Convenience:
   - They eliminate the need to switch between regular eyeglasses and sunglasses, providing a seamless experience for the wearer.

5. Adaptation Speed:
   - Modern transition lenses are designed to change tint relatively quickly, although the exact speed can vary based on the specific brand and environmental conditions.

6. Aesthetic and Comfort Benefits:
   - The thinner and lighter lenses are not only more comfortable but also more aesthetically pleasing, as they reduce the "coke-bottle" effect often seen with high prescriptions.