目的:评估一种智能手机辅助的新型“任意点两步法”在白内障超声乳化吸出联合人工晶状体植入术中寻找目标轴位的便利性和准确性。方法:前瞻性观察性研究。选取2021-10/2022-04于我院拟行白内障超声乳化吸出联合人工晶状体植入术的年龄...目的:评估一种智能手机辅助的新型“任意点两步法”在白内障超声乳化吸出联合人工晶状体植入术中寻找目标轴位的便利性和准确性。方法:前瞻性观察性研究。选取2021-10/2022-04于我院拟行白内障超声乳化吸出联合人工晶状体植入术的年龄相关性白内障患者62例62眼。随机分为两组,对照组31例31眼采用裂隙灯下标记的“传统两步法”标记人工晶状体的目标轴位,试验组31例31眼采用智能手机辅助的“任意点两步法”标记人工晶状体的目标轴位。术中均采用Callisto eye导航系统作为标准参照,计算参照标记点的偏差值(偏差-1)、目标轴位标记点的偏差值(偏差-总)和参照标记点到目标轴位标记点夹角的偏差值(偏差-2),并记录术前轴位标记用时。结果:试验组偏差-1值和偏差-总值均低于对照组(1.06°±1.39°vs 2.48°±2.23°,1.77°±1.54°vs 2.81°±1.58°,均P<0.01),但两组偏差-2值无明显差异(1.35°±1.40°vs 1.48°±1.79°,P>0.05)。试验组术前轴位标记用时短于对照组(1.77±1.70 min vs 2.88±3.20 min,P<0.01)。结论:与“传统两步法”相比,智能手机辅助的“任意点两步法”在白内障超声乳化吸出联合人工晶状体植入术中寻找目标轴位的过程操作简便省时、准确性高。展开更多
AIM:To establish pupil diameter measurement algorithms based on infrared images that can be used in real-world clinical settings.METHODS:A total of 188 patients from outpatient clinic at He Eye Specialist Shenyang Hos...AIM:To establish pupil diameter measurement algorithms based on infrared images that can be used in real-world clinical settings.METHODS:A total of 188 patients from outpatient clinic at He Eye Specialist Shenyang Hospital from Spetember to December 2022 were included,and 13470 infrared pupil images were collected for the study.All infrared images for pupil segmentation were labeled using the Labelme software.The computation of pupil diameter is divided into four steps:image pre-processing,pupil identification and localization,pupil segmentation,and diameter calculation.Two major models are used in the computation process:the modified YoloV3 and Deeplabv 3+models,which must be trained beforehand.RESULTS:The test dataset included 1348 infrared pupil images.On the test dataset,the modified YoloV3 model had a detection rate of 99.98% and an average precision(AP)of 0.80 for pupils.The DeeplabV3+model achieved a background intersection over union(IOU)of 99.23%,a pupil IOU of 93.81%,and a mean IOU of 96.52%.The pupil diameters in the test dataset ranged from 20 to 56 pixels,with a mean of 36.06±6.85 pixels.The absolute error in pupil diameters between predicted and actual values ranged from 0 to 7 pixels,with a mean absolute error(MAE)of 1.06±0.96 pixels.CONCLUSION:This study successfully demonstrates a robust infrared image-based pupil diameter measurement algorithm,proven to be highly accurate and reliable for clinical application.展开更多
目的:评价玻璃体腔内注射康柏西普治疗黄斑部小分支视网膜静脉阻塞继发黄斑水肿的有效性及安全性。方法:回顾性分析2015-07/2016-09在我院确诊为黄斑小分支视网膜静脉阻塞继发黄斑囊样水肿的患者资料19例19眼,所有患者均按3+按需注射(pr...目的:评价玻璃体腔内注射康柏西普治疗黄斑部小分支视网膜静脉阻塞继发黄斑水肿的有效性及安全性。方法:回顾性分析2015-07/2016-09在我院确诊为黄斑小分支视网膜静脉阻塞继发黄斑囊样水肿的患者资料19例19眼,所有患者均按3+按需注射(pro re nata,PRN)的方法行玻璃体腔内注射康柏西普0.05mL(0.5mg),每月随诊观察最佳矫正视力、中央视网膜厚度、注射次数及眼部相关并发症等。结果:治疗后1、2、3、6mo的最佳矫正视力与治疗前相比均有改善,差异具有统计学意义(P<0.01);治疗后1、2、3、6mo的黄斑中心凹厚度与治疗前相比均下降,差异具有统计学意义(P<0.01);其中有3眼出现反复发作的黄斑水肿,FFA检查显示微血管瘤渗漏,给予局部光凝封闭血管瘤后水肿吸收;治疗及随诊期间所有患者均未出现玻璃体出血、视网膜脱离、持续高眼压和眼内炎等并发症。结论:玻璃体腔注射康柏西普治疗黄斑小分支静脉阻塞继发的黄斑水肿安全有效,可以明显改善视力,减轻黄斑水肿;顽固的黄斑水肿建议行FFA检查,如水肿为微血管瘤渗漏造成建议联合局部光凝治疗。展开更多
文摘目的:评估一种智能手机辅助的新型“任意点两步法”在白内障超声乳化吸出联合人工晶状体植入术中寻找目标轴位的便利性和准确性。方法:前瞻性观察性研究。选取2021-10/2022-04于我院拟行白内障超声乳化吸出联合人工晶状体植入术的年龄相关性白内障患者62例62眼。随机分为两组,对照组31例31眼采用裂隙灯下标记的“传统两步法”标记人工晶状体的目标轴位,试验组31例31眼采用智能手机辅助的“任意点两步法”标记人工晶状体的目标轴位。术中均采用Callisto eye导航系统作为标准参照,计算参照标记点的偏差值(偏差-1)、目标轴位标记点的偏差值(偏差-总)和参照标记点到目标轴位标记点夹角的偏差值(偏差-2),并记录术前轴位标记用时。结果:试验组偏差-1值和偏差-总值均低于对照组(1.06°±1.39°vs 2.48°±2.23°,1.77°±1.54°vs 2.81°±1.58°,均P<0.01),但两组偏差-2值无明显差异(1.35°±1.40°vs 1.48°±1.79°,P>0.05)。试验组术前轴位标记用时短于对照组(1.77±1.70 min vs 2.88±3.20 min,P<0.01)。结论:与“传统两步法”相比,智能手机辅助的“任意点两步法”在白内障超声乳化吸出联合人工晶状体植入术中寻找目标轴位的过程操作简便省时、准确性高。
文摘AIM:To establish pupil diameter measurement algorithms based on infrared images that can be used in real-world clinical settings.METHODS:A total of 188 patients from outpatient clinic at He Eye Specialist Shenyang Hospital from Spetember to December 2022 were included,and 13470 infrared pupil images were collected for the study.All infrared images for pupil segmentation were labeled using the Labelme software.The computation of pupil diameter is divided into four steps:image pre-processing,pupil identification and localization,pupil segmentation,and diameter calculation.Two major models are used in the computation process:the modified YoloV3 and Deeplabv 3+models,which must be trained beforehand.RESULTS:The test dataset included 1348 infrared pupil images.On the test dataset,the modified YoloV3 model had a detection rate of 99.98% and an average precision(AP)of 0.80 for pupils.The DeeplabV3+model achieved a background intersection over union(IOU)of 99.23%,a pupil IOU of 93.81%,and a mean IOU of 96.52%.The pupil diameters in the test dataset ranged from 20 to 56 pixels,with a mean of 36.06±6.85 pixels.The absolute error in pupil diameters between predicted and actual values ranged from 0 to 7 pixels,with a mean absolute error(MAE)of 1.06±0.96 pixels.CONCLUSION:This study successfully demonstrates a robust infrared image-based pupil diameter measurement algorithm,proven to be highly accurate and reliable for clinical application.
文摘目的:评价玻璃体腔内注射康柏西普治疗黄斑部小分支视网膜静脉阻塞继发黄斑水肿的有效性及安全性。方法:回顾性分析2015-07/2016-09在我院确诊为黄斑小分支视网膜静脉阻塞继发黄斑囊样水肿的患者资料19例19眼,所有患者均按3+按需注射(pro re nata,PRN)的方法行玻璃体腔内注射康柏西普0.05mL(0.5mg),每月随诊观察最佳矫正视力、中央视网膜厚度、注射次数及眼部相关并发症等。结果:治疗后1、2、3、6mo的最佳矫正视力与治疗前相比均有改善,差异具有统计学意义(P<0.01);治疗后1、2、3、6mo的黄斑中心凹厚度与治疗前相比均下降,差异具有统计学意义(P<0.01);其中有3眼出现反复发作的黄斑水肿,FFA检查显示微血管瘤渗漏,给予局部光凝封闭血管瘤后水肿吸收;治疗及随诊期间所有患者均未出现玻璃体出血、视网膜脱离、持续高眼压和眼内炎等并发症。结论:玻璃体腔注射康柏西普治疗黄斑小分支静脉阻塞继发的黄斑水肿安全有效,可以明显改善视力,减轻黄斑水肿;顽固的黄斑水肿建议行FFA检查,如水肿为微血管瘤渗漏造成建议联合局部光凝治疗。
