Semi-finished 1.56 photogrey Flat Top UC/HC/HMC Bifocal Lens

1. It offers a better price-to-performance ratio than higher-index lenses like 1.67 or 1.74.

2. Photogrey (Photochromic) Feature
● Light-Adaptive: Photogrey lenses automatically darken in response to UV light and lighten back up indoors. This is perfect for those who spend a lot of time outdoors, as it reduces the need to carry separate prescription sunglasses.
● UV Protection: They provide full protection against UV rays, which can help in preventing eye strain and long-term damage from sunlight.
● Convenient: The lenses adjust to different light conditions, so they can be used both indoors and outdoors without needing to change glasses.

3. Flat Top Design
● Progressive Lens: The “Flat Top” design usually refers to the top of the lens being flat and accommodating a bifocal-like design, commonly with a visible segment (used for reading or close-up work).
● Easy Transition: The flat-top (often referred to as a “D-segment”) provides a clear division between distance vision and near vision, which makes it easier for people who need bifocal lenses but don’t want the smooth transition of a progressive lens.
● Less Visible Line: Some people prefer the flat-top bifocal design because it can be less noticeable than a full bifocal lens.

4. Semi-Finished Lens
● Customizable: Semi-finished lenses are not fully shaped or cut to the specific prescription. This allows opticians to customize the lens to fit your frame and prescription needs.
● Flexible Options: You can choose different types of coatings, such as anti-reflective, scratch-resistant, or blue-light filtering coatings, making it adaptable to your specific preferences.