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Abstract #56121 Published in IGR 16-1
Comparison of Central Corneal Thickness Measured by Hand-Held and Desk-Mounted Ultrasound Pachymeters in Glaucoma Patients
Salim S; Du H; Wan JSeminars in Ophthalmology 2015; 30: 268-271
ABSTRACT PURPOSE: The purpose of this study was to compare the accuracy and reproducibility of central corneal thickness measured by hand-held and desk-mounted ultrasound pachymeter in glaucoma patients under treatment. METHODS: Prospective study of 65 glaucoma patients. Central corneal thickness was measured by two ultrasound pachymeters: the hand-held, portable PachPen (Accutome, Lynwood, WA), and the desk-mounted PacScan 300 (Sonomed, Lake Success, NY). RESULTS: The mean ± SD central corneal thickness was 526.5 ± 44.8 µm and 530.0 ± 44.7 µm for the hand-held and desk-mounted pachymeters, respectively (p = 0.15). Linear regression analysis revealed a slope of 0.97 with Pearson correlation coefficient of 0.96. Bland-Altman analysis showed a mean difference of measurements by both pachymeters of 3.22 µm with two standard deviations = 9.51. Both instruments showed high intraobserver correlation: 0.972 for the hand-held pachymeter and 0.993 for the desk-mounted pachymeter. CONCLUSION: Central corneal thickness measurements were comparable with the use of hand-held and desk-mounted ultrasound units in glaucoma patients with good intraobserver reproducibility.
Full article
Classification:
2.2 Cornea (Part of: 2 Anatomical structures in glaucoma)
6.12 Ultrasonography and ultrasound biomicroscopy (Part of: 6 Clinical examination methods)
