Fernández-Vigo José Ignacio, Macarro-Merino Ana, Fernández-Vigo Cristina, Fernández-Vigo José Ángel, De-Pablo-Gómez-de-Liaño Lucía, Fernández-Pérez Cristina, García-Feijóo Julián
Department of Ophthalmology, Hospital Clínico San Carlos and Instituto de Investigación Sanitaria San Carlos, Madrid, Spain; Centro Internacional de Oftalmología Avanzada, Madrid, Spain.
Centro Internacional de Oftalmología Avanzada, Madrid, Spain.
Am J Ophthalmol. 2017 Sep;181:37-45. doi: 10.1016/j.ajo.2017.06.018. Epub 2017 Jun 27.
To determine iridocorneal angle changes produced after 2 years of implantable collamer lens (ICL) V4c (STAAR Surgical AG, Nidau, Switzerland) placement by Fourier-domain optical coherence tomography (FD-OCT).
Prospective interventional case series.
In 54 eyes of 27 myopic subjects FD-OCT iridocorneal angle measurements were made before and 1 month, 3 months, 1 year, and 2 years after ICL implant. Trabecular-iris angle (TIA), angle opening distance 500 μm from the scleral spur (AOD), and iridotrabecular contact length (TICL) were compared among these time points and the nasal, temporal, and inferior quadrants.
Preoperative TIAs were 49.5 ± 8.7, 48.3 ± 9.6, and 49.1 ±8.6 degrees for the nasal, temporal and inferior quadrants (P < .001). Corresponding values were 29.9 ± 10.4, 28.4 ± 10.8, and 28.8 ± 9.7 degrees at 1 month and 27.3 ± 8.8, 26.8 ± 8.1, and 28.9 ± 7 degrees at 2 years of follow-up, indicating angle narrowing of 39%-45% and no further narrowing beyond 1 month in the nasal (P = .133), temporal (P = .376), and inferior (P = 1.000) quadrants. Trabecular-iris contact (TIC) was observed in 8 eyes of 8 subjects, mostly only in the temporal quadrant. Mean TICL failed to vary during follow-up (307 ± 288 μm at 3 months and 225 ± 142 μm at 2 years, P = .159).
In response to ICL V4c implant, considerable angle narrowing was detected at 1 month but this narrowing remained stable at 2 years. In the 8 cases of TIC, no progression of contact was observed beyond 3 months postimplant.
通过傅里叶域光学相干断层扫描（FD - OCT）确定植入可植入式胶原晶状体（ICL）V4c（STAAR Surgical AG，瑞士尼道）2年后产生的虹膜角膜角变化。
前瞻性干预病例系列。
对27例近视患者的54只眼在植入ICL前以及植入后1个月、3个月、1年和2年进行FD - OCT虹膜角膜角测量。比较这些时间点以及鼻侧、颞侧和下方象限的小梁 - 虹膜角（TIA）、距巩膜突500μm处的房角开放距离（AOD）和虹膜小梁接触长度（TICL）。
术前鼻侧、颞侧和下方象限的TIA分别为49.5±8.7、48.3±9.6和49.1±8.6度（P <.001）。随访1个月时相应值分别为29.9±10.4、28.4±10.8和28.8±9.7度，随访2年时分别为27.3±8.8、26.8±8.1和28.9±7度，表明鼻侧（P =.133）、颞侧（P =.376）和下方（P = 1.000）象限的房角狭窄39% - 45%，且1个月后未进一步狭窄。在8例患者的8只眼中观察到小梁 - 虹膜接触（TIC），大多仅在颞侧象限。随访期间平均TICL无变化（3个月时为307±288μm，2年时为225±142μm，P =.159）。
ICL V4c植入后1个月检测到明显的房角狭窄，但这种狭窄在2年时保持稳定。在8例TIC病例中，植入后3个月后未观察到接触进展。
