---
title: What Drives the Cost of ICL Sizing and Preoperative Assessment
description: "ICL sizing is a critical safety step and requires advanced diagnostics beyond standard refractive screening. These assessments contribute meaningfully to the overall cost. **Key diagnostic components** - Anterior chamber depth measurement - White-to-white and sulcus-to-sulcus metrics - Vault prediction modelling…"
url: "https://bluefinvision.com/knowledge-base/topics/diagnostics-testing/what-drives-the-cost-of-icl-sizing-and-preoperative-assessment/"
updated: "2026-03-02"
category: "Diagnostics & Testing"
---

# What Drives the Cost of ICL Sizing and Preoperative Assessment

ICL sizing is a critical safety step and requires advanced diagnostics beyond standard refractive screening. These assessments contribute meaningfully to the overall cost.

**Key diagnostic components**

- Anterior chamber depth measurement
- White-to-white and sulcus-to-sulcus metrics
- Vault prediction modelling
- Endothelial cell count
- High-resolution anterior segment imaging

These tests ensure the lens fits safely and avoids complications such as excessive vault, angle narrowing or endothelial cell loss.

**Why this affects cost**

Sizing accuracy directly influences long-term safety. Clinics investing in advanced imaging (e.g., swept-source OCT, Scheimpflug tomography) incur higher diagnostic costs but reduce avoidable risk.

**Typical UK ranges**

Sizing and preoperative diagnostics typically account for £300-£600 of the total per-eye cost.

**Clinical importance**

Accurate sizing is non-negotiable. It is a governance-level safeguard, not an optional upgrade.

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