مقایسه دقت اندازه گیری فشار داخل چشم با سه تونومتر پالس ایر، تونوپن و گلدمن

Introduction & Objective: The measurement of Intraocular pressure (IOP) is very important not only in the diagnosis and management of glaucomatous conditions but also in any ophthalmologic examination. So this study was designed to compare the results of noncontact pulsair and tononpen tonometry with goldmann known as gold standard method. Materials & Methods: In this cross sectional study on 150 patients after a complete ophthalmic examination tonometry was performed with goldmann (G), pulsair (P) and tonopen (T). Mean values obtained from the three methods and the difference between the first two methods and G were measured and with descriptive statistical methods, t tests and regression tests were analyzed. Results: Mean measured IOP with P was greater than G and T (P=0.03). Correlation coefficient between the 3 methods was acceptable (r2=0.71). Mean difference between P and G does not differs significantly from 0 (P=0.19), but this value between T and G differs significantly from 0 (P=0.02). Both T and P underestimate IOP in high ranges. Conclusion: Both T and P tonometry measures have acceptable accuracy in comparison with G, but in suspicious cases such as glaucoma or ocular hypertension G is better as a gold standard method.