Bülent Çekiç1, İclal Erdem Toslak1, Berna Doğan2, Tuğrul Çakır3, Muhammed Kazım Erol2, Nurullah Bülbüller3. 1. Department of Radiology, Antalya Training and Research Hospital, Antalya, Turkey. 2. Department of Ophthalmology, Antalya Training and Research Hospital, Antalya, Turkey. 3. Department of General Surgery, Antalya Training and Research Hospital, Antalya, Turkey.
Abstract
PURPOSE: To evaluate intraocular pressure (IOP) and extraocular orbital vessels with color Doppler ultrasound (CDU) and investigate the effects of obesity on retrobulbar blood flow. METHODS: Fifty-nine patients were included in this prospective study. Patients were divided into two groups according to body mass index: Group 1 (31 obese patients) and Group 2 (28 non-obese patients). IOP was measured with a Goldmann applanation tonometer, and CDU was used to evaluate the retrobulbar vessels. RESULTS: The mean IOP was 18 ± 6.68 mmHg in the obese group and 13.71 ± 1.60 mmHg in the control group (p<0.001). When the CDU values for the central retinal artery were compared between the groups, the pulsatility index was found to be significantly lower in the obese group than in the control group (p<0.001). When the CDU values for the ophthalmic artery (OA) were compared between the groups, the peak systolic velocity (p<0.001) and end-diastolic velocity (p=0.002) values were found to be significantly lower in the obese group than in the control group. CONCLUSIONS: Obese patients have a higher mean IOP and lower flow velocity than non-obese patients. Increased IOP together with decreased retrobulbar blood flow, particularly in obese individuals, may increase the risk of glaucoma development.
PURPOSE: To evaluate intraocular pressure (IOP) and extraocular orbital vessels with color Doppler ultrasound (CDU) and investigate the effects of obesity on retrobulbar blood flow. METHODS: Fifty-nine patients were included in this prospective study. Patients were divided into two groups according to body mass index: Group 1 (31 obesepatients) and Group 2 (28 non-obesepatients). IOP was measured with a Goldmann applanation tonometer, and CDU was used to evaluate the retrobulbar vessels. RESULTS: The mean IOP was 18 ± 6.68 mmHg in the obese group and 13.71 ± 1.60 mmHg in the control group (p<0.001). When the CDU values for the central retinal artery were compared between the groups, the pulsatility index was found to be significantly lower in the obese group than in the control group (p<0.001). When the CDU values for the ophthalmic artery (OA) were compared between the groups, the peak systolic velocity (p<0.001) and end-diastolic velocity (p=0.002) values were found to be significantly lower in the obese group than in the control group. CONCLUSIONS:Obesepatients have a higher mean IOP and lower flow velocity than non-obesepatients. Increased IOP together with decreased retrobulbar blood flow, particularly in obese individuals, may increase the risk of glaucoma development.
Authors: Ming Ming Zhu; Bonnie N K Choy; Qi Sheng You; Jonathan Cheuk Hung Chan; Alex L K Ng; Kendrick Shih; Janice Jing Chee Cheung; Jasper Ka Wai Wong; Jennifer Shum; Michael Y Ni; Jimmy Shiu-Ming Lai; Gabriel M Leung; Ian Y Wong Journal: Br J Ophthalmol Date: 2021-05-20 Impact factor: 5.908