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Directly measure the posterior corneal surface
The IOLMaster® 700 from ZEISS with Swept Source OCT technology now allows you to directly measure the posterior corneal surface. It combines unique telecentric keratometry measurement of the anterior corneal surface with measurement of the posterior corneal surface in order to calculate Total Keratometry (TK®).
Three exclusive formulas: Barrett TK Universal II, Barrett TK Toric and the new Barrett True K with TK
Can be used in existing IOL calculation formulas – no need for a second device, third-party software or an online calculator
Existing ZEISS IOLMaster 700 can be upgraded
Total Keratometry for post-refractive patients
A recent study conducted by Michael Lawless, James Y. Jiang, Chris Hodge, Gerard Sutton, Timothy V. Robert and Graham Barrett found that in post-myopic LASIK eyes the Barrett True K formula with TK improved the outcome predictions compared to the Barrett True K with Classic Ks within ±0.5 D by >12 % (p = 0.04)1.
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The Barrett True K with TK formula elevates post corneal refractive surgery IOL power calculation to the next level.
All you need to know about Total Keratometry
Download the compendium now!
This compendium provides an overview on:
Why it’s important to measure the posterior corneal surface.
Receive more information about the product and availability in your country!
1
Lawless M, Jiang JY, Hodge C, Sutton G, Roberts TV, Barrett G. Total keratometry in intraocular lens power calculations in eyes with previous laser refractive surgery. Clin Exp Ophthalmol. 2020 Aug;48(6):749-756
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