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Reliability of Intraocular Pressure Measurement by Goldmann Applanation Tonometry After Refractive Surgery: A Review [Response To Letter]

Authors De Bernardo M , Cembalo G, Rosa N 

Received 8 July 2021

Accepted for publication 8 July 2021

Published 13 July 2021 Volume 2021:15 Pages 2981—2982


Maddalena De Bernardo, Giovanni Cembalo, Nicola Rosa

Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, Baronissi, Salerno, Italy

Correspondence: Maddalena De Bernardo
Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, Via Salvador Allende, Baronissi, 84081, SA, Italy
Tel +39089 965063
Fax +39089672407
Email [email protected]

View the original paper by Dr De Bernardo and colleagues

This is in response to the Letter to the Editor

Dear editor

We are very happy that Drs Iglesias and Casroli Marano read with interest the review article we published on the reliability of the different correction formulas to overcome the problem of the intraocular pressure measurements after refractive corneal surgery.1

They complained that we forgot to mention the very interesting paper on the convex tonometer they published in 2020.2

Unfortunately, we could not include it in our review because, as they stated in the letter, their paper was published in April 2020, and our article was submitted in the same period, so we could not be aware of their publication.

However we are very glad to know that they described a device that is able to overcome the problem of measuring the IOP after CRS, because the problems raised by the CRS in several eye measurements, including IOP measurements and IOL power calculation, have been one of our main interests in the last years.3–6

Concerning the paper by McCafferty et al7 we agree, it was our mistake. We are sorry for this and we thank Drs Iglesias and Casroli Marano for their specification.


The authors report no conflict of interest in this communication.


1. De Bernardo M, Cembalo G, Rosa N. Reliability of intraocular pressure measurement by Goldmann applanation tonometry after refractive surgery: a review of different correction formulas. Clin Ophthalmol. 2020;14:2783–2788. doi:10.2147/OPTH.S263856

2. Iglesias M, Yebra F, Kudsieh B, et al. New applanation tonometer for myopic patients after laser refractive surgery. Sci Rep. 2020;10(1):7053. doi:10.1038/s41598-020-64013-4

3. De Bernardo M, Rosa N. Intraocular pressure after myopic photorefractive keratectomy. J Ophthalmic Vis Res. 2018;13(4):520. doi:10.4103/jovr.jovr_209_17

4. De Bernardo M, Rosa N. Intraocular pressure after LASEK. Graefes Arch Clin Exp Ophthalmol. 2018;256(10):2009–2010. doi:10.1007/s00417-018-4047-0

5. Rosa N, De Bernardo M, Borrelli M, Lanza M. New factor to improve reliability of the clinical history method for intraocular lens power calculation after refractive surgery. J Cataract Refract Surg. 2010;36(12):2123–2128. doi:10.1016/j.jcrs.2010.07.017

6. Rosa N, Cione F, Pepe A, Musto S, De Bernardo M. An advanced lens measurement approach (ALMA) in post refractive surgery IOL power calculation with unknown preoperative parameters. PLoS One. 2020;15(8):e0237990. doi:10.1371/journal.pone.0237990

7. McCafferty SJ, Tetrault K, McColgin A, Chue W, Levine J, Muller M. Modified Goldmann prism intraocular pressure measurement accuracy and correlation to corneal biomechanical metrics: multicentre randomised clinical trial. Br J Ophthalmol. 2019;103(12):1840–1844. doi:10.1136/bjophthalmol-2018-313470

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