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Correspondence
Effect of PRK on intraocular pressure measurements and on keratometry
  1. ISAAK SCHIPPER
  1. Ophthalmology Department, Eye Clinic, Cantonal Hospital, 6000 Lucerne 16, Switzerland

    https://doi.org/10.1136/bjo.82.2.203b

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      Editor,—Pepose et al discuss the problem of an inaccurate measurement of intraocular pressure (IOP) after photorefractive keratectomy (PRK).1 To my knowledge, we were the first to demonstrate the apparent reduction of IOP after PRK for myopia in a group of 64 eyes (47 patients).2

      We measured the IOP with the Goldmann tonometer in the central and temporal parts of the cornea before and after PRK for myopia during a period of 1 year. Whereas pressure values in the temporal part remained unchanged mean values in the central part were 2–3 mm Hg lower.2

      Pepose et al say that “the small change in IOP measurement following PRK is probably …

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