Make a Comparison between the ocular perfusion pressure in patient with open angle glaucoma and the control group

The present study was a case-control study in the case group of patients with glaucoma diagnosed by an ophthalmologist. After selecting the case group and confirming the open angle glaucoma in patients with gonioscopy, intraocular pressure control was measured by non-contact tonometry and blood pressure by means of the keeler pressure gauge in both groups and the peripheral pressure was calculated.Ocular perfusion pressure calculated by this formula: OPP= 2⁄3 [ DBP+ 1⁄3 (SBP-DBP)]-IOP

We observed that 54 cases (46.6%) were male and 53.4% were female. The average and standard deviation of the patients' age was also 55.85 ± 14.88 years, which was similar in both groups. We found that the mean and standard deviation of left ventricular perfusion pressure in the case group was 49.4 ± 9.6 mmHg and in the control group it was equal to 45.5 ± 8.5 mmHg. We also observed in our assessment of the right eye that the rate in the case group was 49.4 ± 7.4 mmHg and in the control group it was 8.9 ± 45.7 mmHg.

As ocular perfusion pressure at formula dependent to intraocular pressure and blood pressure.In this study ocular perfusion pressure in primary open angle glaucoma patients higher than normal persons. So according to results of this study this fomula probably is not applicable about actual ocular perfusion condition.