Abstract

GONZALEZ SILVERIO, Ileana et al. Results of Goldman tonometry vs Pascal tonometry in patients after the refractive surgery with LASIK. Rev Cubana Oftalmol [online]. 2009, vol.22, n.1, pp. 0-0. ISSN 1561-3070.

OBJECTIVES: To compare the intraocular pressure figures obtained with Goldman applanation tonometer and with Pascal dynamic contour tonometer, as well as the central corneal thickness variation before and after the refractive surgery with LASIK, and to set the relationship between both tonometers. METHODS: Seventy four patients (140 eyes) aged over 21 years, with stable myopia (-1 to -10 dioptres), cylinder defect lower than-3 dioptres and central corneal thickness under 480 microns. The patients were operated on using Excimer laser (LASIK technique) at the Refractive Surgery Service of "Ramón Pando Ferrer" Cuban Institute of Ophthalmology in the period from December, 2006 to March 2007; then they were followed up for one year, even though the variables were estimated one month after surgery. RESULTS: Females slightly predominated; the 21-39 years age group represented 81 % of cases and moderate myopia present in 74 eyes accounted for 52.6 % of the total number. The intraocular pressure value taken with the dynamic contour tonometer was higher than that of the Goldmann tonometer by 2 mm Hg in the preoperative phase and by 3.7 mm Hg in the postoperative phase. The corneal thickness variation after surgery with LASIK and the intraocular pressure according to the used tonometer were correlated. CONCLUSIONS: The figures of intraocular pressure measured with Pascal tonometer are more reliable than those obtained with Goldmann applanation tonometer, whenever the central corneal thickness is not within the set normal value range.

Keywords : Goldman tonometry; Pascal tonometry; refractive surgery with LASIK.

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