1. Farnaz Siddiqui 2. Abdul Rasheed 3. Ataur Rehman

1. Asstt. Prof. of Ophthalmology, Dow University of Health Sciences (DUHS), Karachi 2. Prof. of Ophthalmology, DUHS, Karachi 3. Asstt. Prof of  Ophthalmology, LNMC, Karachi

ABSTRACT

Objective: To compare the measurements of Intraocular Pressure readings taken by Pascal dynamic contour tonometry and Goldmannapplanation tonometry.

Study Design: Clinical Observational Study

Place and duration of Study: This study was carried out at the Outpatient Department of Ophthalmology,  Dow University hospital (Ojha Campus) of Dow University of Health Sciences, Karachi from July 2010 to September 2010.

Materials and Methods: In a prospective single center study, 282 eyes from 141 subjects were examined by three experienced clinicians. The IOP measurements were obtained with PDCT and GAT and difference in intraocular pressure measured by PDCT and GAT was compared.

Results: IOP measurements by PDCT (mean ± SD, 18.66 ±4.68 mmHg) were significantly (P<0.001) higher than GAT measurements (mean ± SD, 17.84 ± 4.21 mmHg) correlating significantly with each other (r² = 0.842, Pvalue< 0.001)

Conclusion: PDCT allows the suitable and reliable IOP measurements. IOP measurements by PDCT are highly concordant with IOP readings from GAT. PDCT seems to be an appropriate method of tonometry for routine clinical use.

Key Words: Intraocular pressure, Pascal dynamic contour tonometry, GoldmannApplanation tonometry.

Citation of article: Siddiqui F, Rasheed A, Rehman A. Comparison Between the Measurements of

Intraocular Pressure Readings taken by Pascal Dynamic Contour Tonometry and Goldmann  Applanation