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A New Slit Lamp-Based Technique for Anterior Chamber Angle Estimation
Gispets Parcerisas, Joan; Cardona Torradeflot, Genís; Tomás Corominas, Núria; Fuste, Celia; Binns, Alison; Fortes, Miguel Angel
Universitat Politècnica de Catalunya. Departament d'Òptica i Optometria; Universitat Politècnica de Catalunya. GRCUV - Grup de Recerca del Centre Universitari de la Visió; Universitat Politècnica de Catalunya. GREO - Grup de Recerca en Enginyeria Òptica
Purpose. To design and test a new noninvasive method for anterior chamber angle (ACA) estimation based on the slit lamp that is accessible to all eye-care professionals.; Methods. A new technique (slit lamp anterior chamber estimation [SLACE]) that aims to overcome some of the limitations of the van Herick procedure was designed. The technique, which only requires a slit lamp, was applied to estimate the ACA of 50 participants (100 eyes) using two different slit lamp models, and results were compared with gonioscopy as the clinical standard.; Results. The Spearman nonparametric correlation between ACA values as determined by gonioscopy and SLACE were 0.81 (p < 0.001) and 0.79 (p < 0.001) for each slit lamp. Sensitivity values of 100 and 87.5% and specificity values of 75 and 81.2%, depending on the slit lamp used, were obtained for the SLACE technique as compared with gonioscopy (Spaeth classification).; Conclusions. The SLACE technique, when compared with gonioscopy, displayed good accuracy in the detection of narrow angles, and it may be useful for eye-care clinicians without access to expensive alternative equipment or those who cannot perform gonioscopy because of legal constraints regarding the use of diagnostic drugs.
Àrees temàtiques de la UPC::Ciències de la salut::Medicina::Oftalmologia
angle closure
anterior chamber angle
limbal chamber depth
narrow angle glaucoma
Glaucoma -- Diagnòstic
Attribution-NonCommercial-NoDerivs 3.0 Spain
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