Belin/Ambrósio Enhanced Ectasia Display in cataract surgery and relation to final visual acuity

ABSTRACT Objective To analyze and describe the coefficients found on maximum Ambrósio Relational Thickness-Maximum (ART-Max) and Belin/Ambrósio Enhanced Ectasia Display total deviation (BAD-D) in eyes with normal corneal topography subjected to cataract surgery with premium intraocular lens implantation and correlated these data with final visual acuity. Methods ART-Max and BAD-D data from 103 eyes of patients subjected to implantation of diffractive bifocal intraocular lens, with normal corneal topography who achieved visual acuity of 20/20 or 20/25 without correction after cataract surgery were analyzed. The groups with normal and abnormal values were compared using the chi-square test. Results Thirty-two (31.1%) and 71 (68.9%) eyes presented normal and abnormal ART-Max values, respectively. The difference between these groups was significant (p=0.0002). Fifty-five (53.4%) and 48 (46.6%) eyes had normal and abnormal BAD-D, respectively, and intergroup difference was not significant (p=0.9576). Conclusion Among patients with normal corneal topography who underwent premium intraocular and had good final visual acuity of 20/20 or 20/25, suspicious or abnormal indices of ART-Max and BAD-D were frequent, providing evidence that it possibly should not be a contraindication.

【摘要】目的 分析并描述接受高端人工晶状体植入白内障手术的角膜地形图正常患眼的最大安布罗西奥相关厚度最大值（Ambrósio Relational Thickness-Maximum, ART-Max）与贝林/安布罗西奥圆锥角膜增强显示总偏差值（Belin/Ambrósio Enhanced Ectasia Display total deviation, BAD-D）相关参数，并探讨上述指标与术后最终裸眼视力的相关性。
方法 回顾分析103例行衍射型双焦点人工晶状体植入术的角膜地形图正常患者的临床资料，所有患者白内障术后未矫正视力均达到20/20或20/25。将受试者按ART-Max与BAD-D值分为正常组与异常组，采用卡方检验比较两组间的统计学差异。
结果 32眼（31.1%）ART-Max值处于正常范围，71眼（68.9%）ART-Max值异常，两组差异具有统计学意义（p=0.0002）。55眼（53.4%）BAD-D值处于正常范围，48眼（46.6%）BAD-D值异常，两组差异无统计学意义（p=0.9576）。
结论 对于接受高端人工晶状体植入术且术后最终裸眼视力达到20/20或20/25的角膜地形图正常患者，ART-Max与BAD-D指标出现可疑或异常的比例较高，这提示上述指标或不应作为该类手术的禁忌证。