RX-Safety’s anti-fatigue lenses use advanced Digital Freeform Technology, a computer-controlled surfacing process that creates a lens surface customized to your prescription and frame measurements. The result is a seamless transition between zones with no visible lines or abrupt power changes.
The technology incorporates a subtle power boost in the lower third of the lens. Most prescriptions receive a boost between +0.50 and +1.00 diopters in this reading zone. The power gradually increases as your eye moves downward, reaching maximum assistance in the area where you naturally look when viewing screens or reading.
This design addresses the ciliary muscle fatigue that causes digital eye strain. Your ciliary muscle contracts to focus on close objects and relaxes for distance viewing. Sustained near focus creates continuous muscle tension, so anti-fatigue lenses allow your eyes to work less while maintaining clear vision.
Benefits of digital freeform manufacturing include:
- Precise, customized lens surfaces calculated for your specific measurements
- Smooth, gradual power transitions that feel natural
- Wider viewing zones compared to traditional lens designs
- Reduced peripheral distortion and swim effect
- Optimal optical clarity across the entire lens surface





















