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.