IOP Correction (CCT)

Goldmann Adjustment (Dresdner) • IOP/CCT Triage

Measured IOP (mmHg)

CCT (µm)

Clinical Note: Use correction factors with caution. Gunvant et al. (2010) show that simple nomograms often overestimate the CCT effect and may worsen agreement with manometry.

Awaiting Inputs

Enter measured pressure and thickness to estimate adjusted IOP.

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

Clinical Utility

Adjustment of measured Intraocular Pressure (IOP) in patients with suspected ocular hypertension or glaucoma.

Mitigating errors in Goldmann Applanation Tonometry (GAT) caused by central corneal thickness (CCT) variance.

Standard screening for patients undergoing refractive surgery (pre- and post-LASIK/PRK).

Reference Standards

The average central corneal thickness in a normal population is typically 540–550 µm. Deviations from this mean result in clinically significant over- or under-estimation of true intraocular pressure.

Last Comprehensive Review: 2026

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