García-García Manuel Ángel, Belda José I, Schargel Konrad, Santos María José, Ruiz-Colecha José, Rey Carmen, García-García Pablo, Mompean Blas
J Pediatr Ophthalmol Strabismus. 2018 May 1;55(3):171-177. doi: 10.3928/01913913-20171026-01. Epub 2018 Jan 31.
To assess whether optical coherence tomography (OCT) could be useful for detecting and documenting fixation in patients with microtropia.
Retinal fixation observation was performed using spectral-domain OCT on amblyopic children with microtropia. The position between the retinal fixation point and the anatomical fovea was measured, in microns, using the system software tools. Only patients with a high level of cooperation, OCT scan quality signal of 7 or better, and visual acuity of 0.70 logarithm of the minimum angle of resolution (logMAR) or worse in the amblyopic eye were included.
A total of 25 patients were included: 15 with microtropia (study group) and 10 without tropia and with foveal fixation and stereopsis (control group). In the study group, microtropia was previously diagnosed in 67% of cases through the cover test, and was predominantly in the left eye (73%). The average visual acuity of the sound eye was 0.03 decimal and 0.18 logMAR in the amblyopic eye. The microtropia was 3.73 ± 3.34 prism diopters and eccentric fixation (387 ± 199 µm) with OCT was observed in all cases except one. Eccentricity was predominantly in the superonasal quadrant (57%). Both eyes in the control group and the contralateral eyes of the study group showed foveal fixation.
OCT can play an important role in the diagnosis and measurement of eccentric fixation in eyes with microtropia, providing high sensitivity. [J Pediatr Ophthalmol Strabismus. 2018;55(3):171-177.].
评估光学相干断层扫描（OCT）是否有助于检测和记录微小斜视患者的注视情况。
使用光谱域OCT对患有微小斜视的弱视儿童进行视网膜注视观察。使用系统软件工具，以微米为单位测量视网膜注视点与解剖学黄斑中心凹之间的位置。仅纳入合作程度高、OCT扫描质量信号为7或更高且弱视眼视力为0.70最小分辨角对数（logMAR）或更差的患者。
共纳入25例患者：15例微小斜视患者（研究组）和10例无斜视、有黄斑中心凹注视和立体视的患者（对照组）。在研究组中，67%的病例先前通过遮盖试验诊断为微小斜视，且主要为左眼（73%）。健眼的平均视力为小数视力0.03，弱视眼为0.18 logMAR。微小斜视度数为3.73±3.34棱镜度，除1例病例外，所有病例经OCT观察均存在偏心注视（387±199μm）。偏心主要位于鼻上象限（57%）。对照组的双眼以及研究组的对侧眼均表现为黄斑中心凹注视。
OCT在微小斜视眼偏心注视的诊断和测量中可发挥重要作用，具有高敏感性。[《小儿眼科与斜视杂志》。2018；55(3)：171 - 177。]
