PRESBYOND can sometimes be used as an enhancement after prior vision correction, but only with careful assessment of corneal safety and optical benefit.
When enhancement may be appropriate
Presbyopia emerges years after primary surgery.
- Stable refraction long after initial LASIK, PRK, or SMILE
- Adequate residual stromal thickness and regular topography
- No signs of ectasia, flap issues, or significant haze
- Clear lenses and new presbyopic symptoms
- Preference to postpone lens replacement
Extra considerations
Re‑treating previously operated eyes is higher risk.
- Lower tissue reserve increases ectasia and quality‑of‑vision concerns
- Higher likelihood of dry eye and night‑time phenomena
- Alternative of lens‑based presbyopia surgery may be safer in some cases
- Requires an experienced refractive surgeon and detailed discussion
- Suitability must be judged individually rather than assumed
