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Dr. Becker presents a text on the gonioscopic examination and interpretation of the anterior segment of the eye. The first eight chapters of his compact treatise are devoted to the history and development of gonioscopy, embryology and anatomy of the filtering angle, and an in-depth comparison of the various methods and lenses used in clinical gonioscopy. In this section, he redundantly emphasizes the advantage of using an indirect method of gonioscopy facilitated by a constantly supplied layer of fluid between the cornea and the goniolens. His "fluid bridge" gonioprism has the stated advantage of minimal ocular distortion, thereby decreasing the chance of misinterpreting the intimate relationship of angle structures. This interpretation is primarily important in evaluating eyes with or susceptible to angle-closure glaucoma. The author recommends a grading system of the anterior chamber architecture that combines an estimation of the width of the trabecular band and its relationship to the
Bellows AR. Clinical Gonioscopy: A Text and Stereoscopic Atlas.. Arch Ophthalmol. 1973;90(1):88. doi:10.1001/archopht.1973.01000050090028