A stable prescription is an essential requirement and strongly supports suitability for PRESBYOND.
What stability means
Consistency improves predictability.
- Little or no change in sphere or cylinder over 12-24 months
- Similar results between different eye‑care visits
- No progressive corneal disease such as keratoconus
- Stable visual function at distance and near
- Confidence that laser targeting will remain appropriate for many years
Why this matters
Blended vision is optimised for a specific refraction.
- Reduces risk of early imbalance or regression
- Helps maintain the planned relationship between the two eyes
- Supports high satisfaction with reduced spectacle dependence
- Aligns with safety standards for all refractive laser procedures
- Unstable prescriptions are usually observed and re-checked before surgery
