IOP Correction for Central Corneal Thickness

Clinical reference table for adjusting intraocular pressure based on CCT

To adjust the IOP, apply the correction factor in the right column to the intraocular pressure obtained by your tonometer. Then you’ll have the adjusted IOP.

Measurement note

Several pachymetry methods are available. Always use the complete value, including epithelium and endothelium. If measurements are imprecise, repeat 3 times and use the average.

IOP correction central corneal thickness pachymetry chart

Fix IOP according to central corneal thickness. IOP correction table used for adjusting intraocular pressure based on central corneal thickness (CCT).

This table is also available in CataracTools, the free Android app for cataract surgeons.

Source

Patwardhan, Ashish A et al. "The importance of central corneal thickness measurements and decision making in general ophthalmology clinics: a masked observational study." BMC Ophthalmology 8 (2008): 1–1. → Full article

More surgical tools

If you use this table regularly, these tools are built for the same workflow.

Android app

CataracTools

IOP correction is built into the app alongside sulcus calculator, iris claw, biometry lens switcher and treat-and-extend scheduler. Offline-ready.

See CataracTools →

Spreadsheet · Google Sheets

SIA Calculator & Biometry

Track your surgically induced astigmatism case by case. Record IOL model, type and power alongside postoperative visual acuity. Sulcus calculator also available here.

Open Biometry →

Developed by Dr. Alex Giménez, ophthalmologist in Girona (Spain), specialising in cataract surgery, retina and uveitis. · CataracTools · Biometry · Contact