Reproducibility of retinal oxygen saturation in normal and treated glaucomatous eyes
Autor: | Krishna S. Kishor, David S. Greenfield, Iman Goharian, Shawn M Iverson, Mitra Sehi, Rosa Catalina Ruiz |
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Rok vydání: | 2014 |
Předmět: |
Adult
Male medicine.medical_specialty Intraocular pressure Visual acuity Glaucoma Ocular perfusion Tonometry Ocular Cellular and Molecular Neuroscience chemistry.chemical_compound Oxygen Consumption Ophthalmology medicine Humans Oximetry Prospective Studies Antihypertensive Agents Intraocular Pressure Aged Oxygen saturation (medicine) Reproducibility business.industry Reproducibility of Results Retinal Vessels Mean age Retinal Middle Aged medicine.disease Sensory Systems Oxygen chemistry Regional Blood Flow Female medicine.symptom business |
Zdroj: | British Journal of Ophthalmology. 99:318-322 |
ISSN: | 1468-2079 0007-1161 |
DOI: | 10.1136/bjophthalmol-2014-305718 |
Popis: | To measure the reproducibility of retinal oxygen saturation (SaO2) levels among treated glaucomatous eyes and normal controls in a prospective non-randomised study.Patients with perimetric glaucoma (PG) and normal controls were included. Exclusion criteria for both groups included visual acuity20/30, unreliable visual fields, thyroidopathies, hemoglobinopathies, cardiovascular and pulmonary diseases. Retinal oximetry was performed twice consecutively on one randomly selected eye of PG and normal controls using spectrophotometric retinal oximeter (SRO; Oxymap ehf., Iceland). Four main retinal vessel pairs were analysed separately. Coefficients of variability (CoV), coefficients of repeatability (CoR) and intraclass correlation coefficients (ICCs) in arteries (a.SaO2) and veins (v.SaO2) were calculated.23 PG (mean age 68.3±10.8 years) and 22 normal subjects (mean age 61.5±18.2 years; p=0.14) were included. The intraocular pressure and mean ocular perfusion pressure in glaucoma (14.4±4.2 mm Hg; 45.8±5.8 mm Hg) and controls (14.3±3.3 mm Hg; 45.8±6.1 mm Hg) were similar (p0.05). In the PG group, the a.SaO2 had a CoV of 1.6%, a CoR of 4.7 and an ICC of 0.97; the v.SaO2 had a CoV of 5.9%, a CoR of 8.7 and an ICC of 0.96. In normals, the a.SaO2 had a CoV of 0.98%, a CoR of 3.3 and an ICC of 0.97; the v.SaO2 had a CoV of 4.8%, a CoR of 7.7 and an ICC of 0.93.Retinal oximetry measurements using SRO are highly reproducible in both treated glaucomatous and normal eyes. |
Databáze: | OpenAIRE |
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