TITLE:
Central Corneal Thickness in Glaucoma Patients at the Brazzaville University Hospital Center
AUTHORS:
Charles Géraud Fredy Nganga Ngabou, Ganone Tedang, Reinette Messe-Ambia Koulimaya, Francine Alandzobo Bouhelo-Pam, Vissimy Mokimi Onka, Benedicte Diatewa, Lyz Sarah Bell’Hantier, Marvin Huglor Mpan, Chantal Makita
KEYWORDS:
Primary Open-Angle Glaucoma, Central Corneal Thickness, Pachymetry, Intraocular Pressure
JOURNAL NAME:
Open Journal of Ophthalmology,
Vol.16 No.2,
March
24,
2026
ABSTRACT: Summary: We determined the value of central corneal thickness (CCT) in Congolese patients with primary open-angle glaucoma (POAG) and assessed its impact on intraocular pressure (IOP). Patients and Methods: We conducted a cross-sectional study at the University Hospital of Brazzaville. IOP was measured using a Goldmann applanation tonometer. Pachymetry was performed with an optical pachymeter (Topcon TRK-2P). Adjusted IOP was determined using the Ehlers correction table. Data were collected on standardized forms, entered using CSPro 7.4, and analyzed with the public health software SPSS 25. Results: Mean IOP in the right eye was 23.16 ± 8.66, with values ranging from 10 to 55. Mean IOP in the left eye was 23.21 ± 9.24, with values ranging from 10 to 57. Mean CCT in the right eye was 515.13 ± 38.23 µm, ranging from 434 to 590. Mean CCT in the left eye was 512.22 ± 34.56 µm, ranging from 435 to 582. Mean adjusted IOP in the right eye was 23.87 ± 8.05, ranging from 10 to 50. Mean adjusted IOP in the left eye was 23.88 ± 8.29, ranging from 10 to 57. The difference between mean adjusted IOP and non-adjusted IOP was statistically significant (p = 0.03). Conclusion: Patients with POAG have corneas that are thinner than the Caucasian average, which results in overestimated ocular pressures that must be taken into account for diagnosis, treatment, and follow-up.