PRESBYOND is generally not suitable while the prescription is still changing.
Problems with ongoing change
Results may not remain accurate.
- Refractive shift can quickly undo the benefits of surgery
- Changing refraction may indicate undiagnosed corneal disease
- Increases likelihood of needing further procedures
- Makes it harder to plan the blended‑vision balance between eyes
- Conflicts with standard refractive surgery safety guidelines
Recommended approach
Stabilisation comes first.
- Monitor prescription over time to confirm when it becomes stable
- Use corneal topography to exclude ectasia or other pathology
- Manage vision with spectacles or contact lenses in the meantime
- Reassess suitability once stability is documented
- Consider lens-based options if change is driven by early cataract rather than cornea
