PRESBYOND‑style enhancement after PRK or LASEK is sometimes possible, but only with adequate corneal thickness, regularity, and stability.
Potential indications
It can address new presbyopic needs.
- Previous surface laser with stable results and good corneal health
- Presbyopia now causing significant near‑vision difficulties
- Safe residual stromal thickness and regular topography
- Preference for further corneal laser rather than lens surgery for now
- Clear lenses and healthy retina
Risks and limitations
Repeat surface ablation requires caution.
- Risk of haze, regression, or worsened dry eye may be higher
- Tissue budget may restrict full correction of all components
- Any irregularity or early ectasia makes further laser inappropriate
- Lens‑based options may provide a more durable long‑term solution
- Case‑by‑case assessment in an experienced refractive clinic is essential
