---
title: What prescriptions are suitable for PresbyMAX surgery?
description: "PresbyMAX is designed for presbyopic patients with low to moderate myopia, hyperopia, and astigmatism within typical laser correction ranges. ## Typical refractive ranges Exact limits depend on corneal thickness and platform. - Myopia generally up to around -7 dioptres -…"
url: "https://bluefinvision.com/knowledge-base/topics/suitability/what-prescriptions-are-suitable-for-presbymax-surgery/"
updated: "2025-12-24"
category: Suitability
---

# What prescriptions are suitable for PresbyMAX surgery?

PresbyMAX is designed for presbyopic patients with low to moderate myopia, hyperopia, and astigmatism within typical laser correction ranges.

## Typical refractive ranges

Exact limits depend on corneal thickness and platform.

- Myopia generally up to around -7 dioptres
- Hyperopia commonly up to around +4 dioptres
- Astigmatism usually up to about 3 dioptres
- Combined spherical and cylindrical error must stay within safe ablation depth
- Prescription should be stable on repeated testing over 12-24 months

## When prescriptions may not be suitable

High errors need alternative strategies.

- Very high myopia or hyperopia where tissue removal would be excessive
- Irregular astigmatism or keratoconus, where laser may worsen shape
- Eyes better served by ICL or lens replacement due to extreme prescriptions
- Fluctuating or rapidly changing refraction
- Assessment always includes detailed corneal mapping before deciding