Navasuja Kumar1,2, Rodica Pop-Busui3, David C Musch1,2, David M Reed1, Anna C Momont1,4, Munira Hussain1, Nilesh Raval5, Sayoko E Moroi1, Roni Shtein1. 1. Department of Ophthalmology and Visual Sciences, University of Michigan Medical School, Ann Arbor, MI. 2. Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI. 3. Department of Internal Medicine, Division of Metabolism, Endocrinology, and Diabetes, University of Michigan Medical School, Ann Arbor, MI. 4. Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, University Station Clinic, Madison, WI. 5. Wayne State University School of Medicine, Wayne State University School of Medicine, Detroit, MI.
Abstract
PURPOSE: To investigate the relationship between central corneal thickness (CCT) and diabetes disease severity among patients with diabetic peripheral neuropathy (DPN) compared with controls. METHODS: In this cross-sectional study, 34 participants were examined. DPN status was assessed by clinical examination, nerve conduction studies, and quantitative sensory testing. All participants underwent comprehensive eye examination that included intraocular pressure measured by Goldmann applanation tonometry. CCT was measured by ultrasound pachymetry, and the thickness of corneal layers was assessed by corneal confocal microscopy. Association of CCT and DPN was examined using ANOVA. RESULTS: Among the 34 participants, there were 9 controls, 16 patients with mild DPN, and 9 patients with severe DPN. CCT was significantly increased in the DPN groups compared with controls (P = 0.0003). Mean CCT among controls was 552.7 ± 29.2 μm compared with 583.4 ± 25.0 μm in the mild DPN group and 613.3 ± 28.8 μm in the severe DPN group. In addition, stromal thickness differed significantly between the 3 study groups (P = 0.045). Mean stromal thickness among controls was 439.5 ± 23.5 μm compared with 478.9 ± 37.5 μm in the mild DPN group and 494.5 ± 39.1 μm in the severe DPN group. CONCLUSIONS: This study demonstrates that CCT increases with DPN severity because of an increase in stromal thickness. CCT increase associated with DPN has important clinical implications including glaucoma progression, keratoconus susceptibility, and intraocular pressure assessment and should be accounted for when evaluating patients with diabetes.
PURPOSE: To investigate the relationship between central corneal thickness (CCT) and diabetes disease severity among patients with diabetic peripheral neuropathy (DPN) compared with controls. METHODS: In this cross-sectional study, 34 participants were examined. DPN status was assessed by clinical examination, nerve conduction studies, and quantitative sensory testing. All participants underwent comprehensive eye examination that included intraocular pressure measured by Goldmann applanation tonometry. CCT was measured by ultrasound pachymetry, and the thickness of corneal layers was assessed by corneal confocal microscopy. Association of CCT and DPN was examined using ANOVA. RESULTS: Among the 34 participants, there were 9 controls, 16 patients with mild DPN, and 9 patients with severe DPN. CCT was significantly increased in the DPN groups compared with controls (P = 0.0003). Mean CCT among controls was 552.7 ± 29.2 μm compared with 583.4 ± 25.0 μm in the mild DPN group and 613.3 ± 28.8 μm in the severe DPN group. In addition, stromal thickness differed significantly between the 3 study groups (P = 0.045). Mean stromal thickness among controls was 439.5 ± 23.5 μm compared with 478.9 ± 37.5 μm in the mild DPN group and 494.5 ± 39.1 μm in the severe DPN group. CONCLUSIONS: This study demonstrates that CCT increases with DPN severity because of an increase in stromal thickness. CCT increase associated with DPN has important clinical implications including glaucoma progression, keratoconus susceptibility, and intraocular pressure assessment and should be accounted for when evaluating patients with diabetes.
Authors: Daniel H W Su; Tien Y Wong; Wan-Ling Wong; Seang-Mei Saw; Donald T H Tan; Sunny Y Shen; Seng-Chee Loon; Paul J Foster; Tin Aung Journal: Ophthalmology Date: 2007-10-26 Impact factor: 12.079
Authors: Rodica Pop-Busui; Andrew J M Boulton; Eva L Feldman; Vera Bril; Roy Freeman; Rayaz A Malik; Jay M Sosenko; Dan Ziegler Journal: Diabetes Care Date: 2017-01 Impact factor: 19.112