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Open AccessReview

Anterior Chamber Angle Assessment Techniques: A Review

1
IRCCS-Fondazione Bietti, 00198 Rome, Italy
2
Department of Surgical and Clinical, Diagnostic and Pediatric Sciences, Section of Ophthalmology, University of Pavia, IRCCS Fondazione Policlinico San Matteo, 27100 Pavia, Italy
3
Department of Surgical and Clinical, Diagnostic and Pediatric Sciences, Section of Ophthalmology, University of Pavia, 27100 Pavia, Italy
4
Department of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, 41125 Modena, Italy
5
Hamilton Glaucoma Center, Shiley Eye Center and Department of Ophthalmology, University of California, La Jolla, San Diego, CA 92093, USA
*
Author to whom correspondence should be addressed.
J. Clin. Med. 2020, 9(12), 3814; https://doi.org/10.3390/jcm9123814
Received: 6 October 2020 / Revised: 21 November 2020 / Accepted: 24 November 2020 / Published: 25 November 2020
(This article belongs to the Special Issue Update on Glaucoma: Pathogenesis and Treatment)
Assessment of the anterior chamber angle (ACA) is an essential part of the ophthalmological examination. It is intrinsically related to the diagnosis and treatment of glaucoma and has a role in its prevention. Although slit-lamp gonioscopy is considered the gold-standard technique for ACA evaluation, its poor reproducibility and the long learning curve are well-known shortcomings. Several new imaging techniques for angle evaluation have been developed in the recent years. However, whether these instruments may replace or not gonioscopy in everyday clinical practice remains unclear. This review summarizes the last findings in ACA evaluation, focusing on new instruments and their application to the clinical practice. Special attention will be given to the comparison between these new techniques and traditional slit-lamp gonioscopy. Whereas ultrasound biomicroscopy and anterior segment optical coherence tomography provide quantitative measurements of the anterior segment’s structures, new gonio-photographic systems allow for a qualitative assessment of angle findings, similarly to gonioscopy. Recently developed deep learning algorithms provide an automated classification of angle images, aiding physicians in taking faster and more efficient decisions. Despite new imaging techniques made analysis of the ACA more objective and practical, the ideal method for ACA evaluation has still to be determined. View Full-Text
Keywords: diagnosis; trabecular meshwork; anterior chamber angle; iridocorneal angle; angle closure glaucoma diagnosis; trabecular meshwork; anterior chamber angle; iridocorneal angle; angle closure glaucoma
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MDPI and ACS Style

Riva, I.; Micheletti, E.; Oddone, F.; Bruttini, C.; Montescani, S.; De Angelis, G.; Rovati, L.; Weinreb, R.N.; Quaranta, L. Anterior Chamber Angle Assessment Techniques: A Review. J. Clin. Med. 2020, 9, 3814. https://doi.org/10.3390/jcm9123814

AMA Style

Riva I, Micheletti E, Oddone F, Bruttini C, Montescani S, De Angelis G, Rovati L, Weinreb RN, Quaranta L. Anterior Chamber Angle Assessment Techniques: A Review. Journal of Clinical Medicine. 2020; 9(12):3814. https://doi.org/10.3390/jcm9123814

Chicago/Turabian Style

Riva, Ivano; Micheletti, Eleonora; Oddone, Francesco; Bruttini, Carlo; Montescani, Silvia; De Angelis, Giovanni; Rovati, Luigi; Weinreb, Robert N.; Quaranta, Luciano. 2020. "Anterior Chamber Angle Assessment Techniques: A Review" J. Clin. Med. 9, no. 12: 3814. https://doi.org/10.3390/jcm9123814

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