Effect of corneal astigmatism on intraocular pressure measurement using ocular response analyzer and Goldmann applanation tonometer.

Purpose: To assess the effect of corneal astigmatism on intraocular pressure (IOP) measurements using an Ocular Response Analyzer (ORA) and a Goldmann applanation tonometer (GAT).

Methods: We prospectively examined 59 normal eyes of 59 healthy volunteers (18 men, 41 women; age, mean +/- standard deviation, 40.5 +/- 14.

Intraocular pressure measured by dynamic contour tonometer and ocular response analyzer in normal tension glaucoma.

Background: To investigate intraocular pressure (IOP) measurement values in normal tension glaucoma (NTG) eyes using two different types of tonometer that are supposed to be little affected by corneal biochemical properties.

Methods: This study included 30 normal eyes of 16 healthy subjects and 30 eyes of 16 patients with NTG. IOP was measured with a Goldmann applanation tonometer (GAT), a Pascal dynamic contour tonometer (DCT), and a Reichert ocular response analyzer (ORA) three times each for normal and NTG eyes.

Factors affecting corneal hysteresis in normal eyes.

Background: To evaluate factors affecting corneal hysteresis (CH) in normal eyes.

Methods: We examined 86 normal eyes of 43 healthy volunteers (age, 39.1 +/- 14.