---
title: Is PRESBYOND surgery suitable if prescription is stable?
description: "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 -…"
url: "https://bluefinvision.com/knowledge-base/topics/suitability/is-presbyond-surgery-suitable-if-prescription-is-stable/"
updated: "2025-12-30"
category: Suitability
---

# Is PRESBYOND surgery suitable if prescription is stable?

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