International Journal of Tropical Medicine
ISSN: Online 1818-779XISSN: Print 1816-3319
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Pressure‐to‐Cornea Index in Primary Open Angle Glaucoma, Normal Tension Glaucoma, Ocular Hypertensive Patients and Patients Without Glaucoma: A Comparitive Case Control Study
Ram Krishna Saxena, Shaurabh Gupta, Ruchi Gupta and Monu Yadav
Page: 185-189 | Received 07 Jan 2024, Published online: 04 Mar 2024
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Abstract
The purpose of this study was to correlate and compare the PCI with a structural and two functional measures of glaucoma on the basis of mean intra ocular pressure (MIOP), central corneal thickness (CCT), True Intra‐ocular pressure (TIOP) and pressure to corneal index. This case control cross sectional study was done in our institute, in which to integrate intraocular pressure measured by goldmann applanation tonometry and central corneal thickness measured by ultrasonic pachymetry as a single risk factor in the form of pressure‐to‐cornea index for various intra‐ocular pressure levels in primary open angle glaucoma, normal tension glaucoma, ocular hypertensive patients and patients without glaucoma as an aim. Total 100 subjects (200 eyes) were taken for the study and divided into 4 groups, 25 patients with PRIMARY OPEN ANGLE GLAUCOMA (POAG), 25 patients with NORMAL TENSION GLAUCOMA (NTG), 25 patients with OCULAR HYPERTENSION (OCULAR HTN) and 25 as a control group who were attending our department as outpatient as well as inpatient in the wards of our Saraswati Medical college, Unnao. Obtained data were tabulated and perform statistical analysis done then we found out of 100 patients, 25 patients (25%) were between 40‐50 years of age., 41 patients (41%) were between 51‐60 yrs and 34 patients (34%) were between 61‐70 year. The sex distribution among the four groups, wherein 55% (55 patients) were males and 45% (45 patients) were females, mean value of MIOP (mean intraocular pressure) in normal, POG, NTG, OHTN groups were 16.12, 18.92, 16.08 and 27.6 mmHG respectively and this was statistically highly significant among the groups. The mean CCT value in the four groups viz., Normal, POG, NTG and OHTN, as shown in table 5 were 0.538, 0.508, 0.53 and 0.53 respectively with p<0.00001 showing a statistically highly significant difference among the four groups. The mean value of TIOP (True intraocular pressure) in Normal, POG, NTG, OHTN groups were respectively 16.95, 19.65, 17.54 and 24.48 mmHG respectively and there was statistically significant difference among the groups. The mean value of PCI (pressure to cornea index) in Normal, POG, NTG, OHTN groups were respectively 105.59, 152.58, 110.58 and 142.69 respectively and there was statistically significant difference among the groups. After completion of the study we concluded, In addition to serve as a single risk factor, PCI can be used to stage glaucoma severity as well.
How to cite this article:
Ram Krishna Saxena, Shaurabh Gupta, Ruchi Gupta and Monu Yadav. Pressure‐to‐Cornea Index in Primary Open Angle Glaucoma, Normal Tension Glaucoma, Ocular Hypertensive Patients and Patients Without Glaucoma: A Comparitive Case Control Study.
DOI: https://doi.org/10.36478/10.59218/makijtm.2024.1.185.189
URL: https://www.makhillpublications.co/view-article/1816-3319/10.59218/makijtm.2024.1.185.189