Pachymetry and visual fields in the diagnosis and prognosis of glaucoma

Buzarovska, Karolina (2015) Pachymetry and visual fields in the diagnosis and prognosis of glaucoma. Bulgarian Forum Glaucoma, 5 (2). pp. 48-52. ISSN 1314-5800


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Abstract Purpose: Studies of the cornea, show that corneal thickness is an important factor influencing the accuracy of measuring intraocular pressure. A pachymetry test is a simple, quick, painless test to measure the thickness of the cornea. With this measurement, we can better understand the IOP reading and develop a treatment plan that is right for the condition. Several techniques are available to reliably and reproducibly measure corneal thickness. The methodologies used in these techniques are based on either ultrasonic or optical principles. While each of the methods have a peculiarity of their own, all have been described as reliable. Material and methods: A retrospective analytical study of the medical records of primary open-angle glaucoma patient, that visited the Glaucoma department of the University Eye Clinic between January 2014 and December 2014. All subjects underwent a complete eye examination. Central corenal thickness (CCT) measurement and various other eye tests were performed, including best-corrected visual acuity (CVA), intraocular pressure (IOP), cup-to-disc ratio (C/D), visual fields by automated perimetry and RNFL thickness. Results: Thinner baseline CCT was associated with more advanced damage at presentation, correlated with mean deviation (MD) (r=0.17, p=0.02) and neuroretinal rim area (NRR) (r=0.20, p=0.02). Glaucomatous eyes had significantly thinner (p=0.01) baseline CCT compared to non-glaucomatous eyes. The slope of visual field change was significantly greater (p=0.05) for eyes with thinner (<540 μm) as compared to thicker corneas. A signifi cant CCT reduction (12.78 ± 13.35 μm, p<0.0001) was noted in glaucomatous eyes. CCT change was in correlation with visual field MD. A thinner CCT (Odds ratio=1.80, p=0.02), was a significant risk factor for glaucoma. Conclusion: In our study, CCT correlated significantly with the amount of glaucomatous damage at presentation. Thinner corneas may be associated with increased risk of visual field progression. Key words: glaucoma, pachimetry, visual fi elds.

Item Type: Article
Subjects: Medical and Health Sciences > Clinical medicine
Divisions: Faculty of Medical Science
Depositing User: Karolina Blazevska Buzarovska
Date Deposited: 22 Nov 2016 13:48
Last Modified: 22 Nov 2016 13:48

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