COMPARATIVE STUDY ON RESULTS OF TWO KINDS TENCNOMETERS BEFORE AND AFTER LASIK

Objective:To investigate the preferred way to measure intraocular pressure before and after laser in-situ keratomileusis(LASIK).Methods:Before LASIK and 6 months after LASIK,corneal pachymeter was used to measure the central corneal thickness(CCT)and peripheral corneal thickness(PCT),non-contact tonometer(NCT)and Tono-Pen tonometer(TPT)to measure central intraocular pressure and peripheral intraocular pressure.And the relationship between intraocular pressure and corneal thickness was analyzed.Results:After LASIK,the NCT central intraocular pressure and CCT were obviously lower than that before LASIK(P0.05).There had no obvious differences between PCT,TPT central intraocular pressure and peripheral intraocular pressure before and after LASIK(P0.05).NCT intraocular pressure had positive correlation with CCT(P0.05);there had no correlations between TPT central intraocular pressure and CCT,TPT peripheral intraocular pressure and PCT(P0.05).Conclusions:TPT intraocular pressure is less affected by corneal thickness and can be acted as the preferred way to measure intraocular pressure after LASIK.