原发性急性闭角型青光眼视网膜神经纤维层厚度变化研究

目的 观察原发性急性闭角型青光眼(APACG)首次发作后6个月内视网膜神经纤维层厚度(RNFLT)变化规律.方法 用光学相干断层扫描仪(OCT)测量首次单侧发作的APACG患者(24例)在眼压控制后3 d内、2周、1月、3月和6月时的双眼RNFLT,比较双眼各时间点RNFLT.对侧眼在发作眼眼压控制后3d内及6月时的RNFLT与正常人(55名55只眼)比较.结果 发作眼平均RNFLT在眼压控制后3 d内(121.49±23.84)μm,较对侧眼明显增加(P＜0.01);2周(107.22±24.72)μm和1月(93.58±18.37)μm与对侧眼的差异无统计学意义(P=0.31和0.08);3月(84.10±19.89)μm和6月(78.98±19.17)μm较对侧眼明显减少(P＜0.01).发作眼不同时间点的RNFLT变化均有统计学意义(P＜0.01～0.048).对侧眼在发作眼眼压控制后3 d内及6月的RNFLT和正常人比较差异无统计学意义(P=0.13～0.98).结论 APACG发作后RNFL厚度即有明显增加,发作后2周至1个月RNFL厚度趋向正常,1个月后RNFL厚度逐渐变薄,至术后6个月RNFL厚度较对侧眼和正常人明显减少.     

Longitudinal changes in retinal nerve fiber layer thickness after acute primary angle closure measured with optical coherence tomography

PURPOSE: Longitudinal follow-up of peripapillary retinal nerve fiber layer (RNFL) thickness after an episode of acute primary angle closure (APAC) using Stratus optical coherence tomography (OCT). METHODS: Seventeen patients who had experienced a single unilateral APAC episode (intraocular pressure, >50 mm Hg) were enrolled. The average and superior, temporal, inferior, and nasal quadrant RNFL thicknesses of the affected and fellow eyes at 1, 4, and 12 weeks after remission were compared by using StratusOCT. The relationship between average RNFL thickness and interval of follow-up were evaluated with regression analysis. RESULTS: The mean duration of the APAC episode was 13.8 hours (range, 3-40). Comparison of the average and four quadrant RNFL thicknesses in the affected eyes longitudinally showed significant differences between 1 and 4, and 1 and 12 weeks, but not between 4 and 12 weeks. The average and four-quadrant RNFL thicknesses for the affected eyes were greater than the analogous values for fellow eyes at 1 week. In contrast, the inferior- and superior-quadrant RNFL thicknesses for the affected eyes were lower at 4 and 12 weeks, whereas the average and nasal quadrant values for the affected eyes were lower than those in fellow eyes at 12 weeks. Average RNFL thickness for the affected eyes was correlated with the interval of follow-up by using inverse regression analysis (P < 0.001; R(2) = 0.60). Controlling for duration of APAC episode, the interval of follow-up on RNFL thickness reduction remained significant (P < 0.001, r = -0.69). CONCLUSIONS: This study demonstrated an initial increase in diffuse RNFL thickness after a single APAC episode, followed by a subsequent decrease.     

急性闭角型青光眼大发作后视网膜神经纤维层厚度的变化

目的观察急性闭角型青光眼大发作后视网膜神经纤维层厚度的改变。方法应用相关光断层扫描（OCT）测量急性闭角型青光眼大发作患者发病及治疗后的视网膜神经纤维层厚度的改变,在同期测量36只眼正常成人的视网膜神经纤维层厚度作为对比。病例入选标准为急性闭角型青光眼单眼大发作患者,能够配合进行OCT检测。测量时间为人院后当天、经治疗眼压下降至正常范围后1、3、6个月。结果符合人选标准并完成随访的病例共36例。在入院当天视网膜神经纤维层厚度较正常对照组增加（P〈0．05）。眼压正常后1、3、6个月,平均视网膜神经纤维层厚度较正常对照均明显下降（P〈0．05）,并随时间推移呈逐渐下降趋势。在眼压下降到正常范围后的1—3个月内视力逐渐上升,而在3～6个月内视力基本稳定。眼压下降到正常后,在整个随访期内均处于正常范围,但是随着时间的推移有逐渐上升的趋势。结论眼压的急性升高在早期可造成视网膜神经纤维层平均厚度增加,以上、下方为主。在经过治疗眼压降至正常范围内后,视网膜神经纤维层厚度逐渐下降、变薄。     

急性闭角型青光眼视网膜神经纤维层改变的一年动态观察

目的观察急性闭角型青光眼视网膜神经纤维层（RNFL）厚度在发病后不同时间段的变化特征。设计前瞻性病例系列。研究对象2007—2009年就诊的急性闭角型青光眼单眼发病者35例35眼。方法人选患者经过临床治疗后眼压控制正常,利用相干光断层扫描（StratusOCT3）技术在发病后2周、3个月、6个月和12个月进行双眼RNFL扫描,并对发作眼压与RNFL厚度进行相关性分析。主要指标RNFL厚度。结果发作后2周发作眼RNFL明显较对侧眼增厚,分别为（141．85±25．22）μm、（112．95±10．54）μm（P=-0．000）;第3个月时两眼没有差异,RNFL厚度分别为（112．38±16．15）μm、（112．26±16．04）μm（P=0．966）;6个月时发作眼较对侧眼稍薄,分别为（101．22±14．06）μm、（108．65±15．03）μm（p=0．021）;12个月时发作眼明显较对侧眼薄,分别为（92．29±13．05）um、（106．77±14．90）μm（P=0．000）。发作眼在观察期内RNFL进行性变薄（阽51．48,P=0．000）,而对侧眼则无显著改变（F=1．599,P=0．192）。早期（3个月内）眼压越高,RNFL越厚（r=0．692,P=-0．000）,但在12个月RNFL的变化中,发作眼压与之无显著相关（r=0．242,P=0．081）。结论急性闭角型青光眼发作眼缓解后RNFL仍进行性丢失,发作时眼压的高低并不是决定最终病变的惟一因素;对侧眼在12个月的观察中也存在一定程度RNFL损害,其临床意义有待进一步研究。     

原发性慢性闭角型青光眼视网膜神经纤维层损害及相关因素研究

目的 观察原发性慢性闭角型青光眼患者(chronic primary angle closure glaucoma,CACG)活体视网膜神经纤维层(retinal nerve fiberlayer thickness,RNFL)损害;分析CACG不同房角粘连程度间RNFL差异及平均RNFL厚度和视野平均缺损(mean visual fielddefects,MD)的相关性.方法 对CACG患者36例(64只眼)和正常人82名(82只眼)用光学相干断层扫描仪(optical coherence tomography,OCT)测量RNFL厚度,比较两者间的差异;比较CACG中无房角粘连、房角粘连范嗣＜1/2和≥1/2圆周眼的RNFL损害的差异;对CACG平均RNFL与相应视野的MD值进行Pearson直线相关分析.结果 CACG平均RNFL(80.61±23.96)μm与正常人(103.7±9.92)μm比较有统计学差异(P＜0.05);CACG平均RNFL厚度在无房角粘连眼(98.46±12.34)μm、粘连范围＜1/2(93.93±14.78)μm和粘连≥1,2圆周眼(69.78±23.82)μm的RNFL的差异有统计学意义(P＜0.05).CACG平均RNFL厚度与视野缺损(MD值)呈正相关(r=0.652,P＜0.001).结论 CACG的RNFL较正常人明显减少;随着CACG病程的发展,平均RNFL厚度减少,视野平均缺损增加.     

急性闭角型青光眼急性发作早期的视网膜神经纤维层厚度变化特征分析

目的　观察急性闭角型青光眼急性发作早期视网膜神经纤维层厚度的变化特点。方法　收集急性闭角型青光眼单次急性发作患者４５例,在病程２周内采用光学相干断层扫描（ｏｐｔｉｃａｌｃｏｈｅｒｅｎｃｅｔｏｍｏｇｒａｐｈｙ,ＯＣＴ）测量双眼视网膜神经纤维层（ｒｅｔｉｎａｌｎｅｒｖｅｆｉｂｅｒｌａｙｅｒ,ＲＮＦＬ）厚度,将发作眼与对侧眼的数据进行比较,并分析ＲＮＦＬ厚度与治疗前眼压、高眼压持续时间和年龄的相关性。结果　急性发作眼ＲＮＦＬ厚度为（１１８．８０±３８．４５）μｍ,上方、下方、鼻侧、颞侧分别为（１４８．６７±５８．５９）μｍ、（１５９．８０±５７．８２）μｍ、（８９．６０±３１．３７）μｍ、（７９．４７±２７．５４）μｍ;对侧眼ＲＮＦＬ厚度为（９８．２０±１６．８９）μｍ,上方、下方、鼻侧、颞侧分别为（１２０．１３±２３．６１）μｍ、（１３１．６０±２７．４１）μｍ、（７４．０１±１８．０７）μｍ、（６７．８０±１３．４１）μｍ。急性发作眼比对侧眼的ＲＮＦＬ厚度增加,且发作眼上方、下方、鼻侧和颞侧各个象限的ＲＮＦＬ较对侧眼均增厚,差异均有统计学意义（均为Ｐ＜０．０５）。急性发作眼的ＲＮＦＬ厚度与治疗前眼压呈正相关（ｒ＝０．３７０,Ｐ＜０．０５）,与高眼压持续时间呈正相关（ｒ＝０．６０３,Ｐ＜０．０１）;与年龄无关（ｒ＝－０．３１７,Ｐ＞０．０５）。结论　急性闭角型青光眼单次急性发作后,ＲＮＦＬ明显水肿,这种变化可持续到发作后２周,且治疗前眼压越高、高眼压持续时间越长,ＲＮＦＬ水肿越严重。     

Optical coherence tomography measurement of retinal nerve fiber layer after acute primary angle closure with normal visual field

PURPOSE: To detect retinal nerve fiber layer (RNFL) thickness after a single acute primary angle closure (APAC) attack with normal visual field. DESIGN: Prospective, observational case study. METHODS: Twenty-eight patients who had a single unilateral APAC attack associated with normal visual fields at three months after remission and 28 single eyes from normal controls were enrolled. Duration of APAC attack was 5.9 +/- 2.7 hours. Comparisons of average RNFL thickness and RNFL thickness in four quadrants and in 12-o'clock-hour segments of the attacked eyes, unaffected fellow eyes, and normal controls were made using fast RNFL thickness (3.4) of Stratus optical coherence tomography. RESULTS: Significant differences were demonstrated comparing the inferior-quadrant RNFL thicknesses for the attacked eyes with those of the normal controls (P = .02) and fellow eyes (P = .02) using one-way analysis of variance with Tukey's tests. CONCLUSIONS: Inferior region RNFL thickness was significantly decreased in the attacked eyes after an APAC episode associated with normal visual field.     

Changes in retinal nerve fibre layer, optic nerve head morphology, and visual field after acute primary angle closure

Aims/Purpose

To determine and correlate the long-term changes in retinal nerve fibre layer (RNFL) thickness, optic nerve head (ONH) morphology, and visual fields after a single episode of acute primary angle closure (APAC).

Methods

This was a cross-sectional comparative study of patients at National University Hospital (Singapore) from 2000 to 2006 after an episode of unilateral APAC. The peripapillary and macular RNFL were measured using Stratus optical coherence tomography (OCT) and ONH configuration was assessed using Heidelberg Retina Tomography (HRT)-III. Humphrey perimetry was also performed, and the presence of disc pallor was noted. APAC eyes were compared with fellow eyes as matched controls.

Results

Twenty-five patients were assessed at a median of 33 months (range, 11–85 months) after APAC. OCT showed that there was a reduction in the peripapillary and outer macular RNFL thickness in APAC eyes compared with controls. Humphrey perimetry revealed significantly reduced mean deviation (P=0.006) and increased pattern standard deviation (P=0.045) in APAC eyes compared with controls. HRT-III showed no difference in mean rim area, rim volume, or cup–disc ratio between APAC eyes and controls. Disc pallor was present in nine APAC eyes (36%) but was absent in fellow eyes (P=0.002), and was associated with peripapillary RNFL thinning, visual field loss, and an increased interval between the onset of symptoms and normalization of intraocular pressure (P=0.023).

Conclusion

APAC results in peripapillary and outer macular RNFL loss, visual field defects, and optic disc pallor, even in cases in which the ONH configuration remains unchanged.     

Measurement of retinal nerve fiber layer in primary acute angle closure glaucoma by optical coherence tomography

PURPOSE: To detect the objective structure changes of the retinal nerve fiber layer (RNFL) in primary acute angle closure glaucoma (PAACG) and to evaluate the efficacy of quantitative assessment of RNFL thickness with optical coherence tomography (OCT). PATIENTS AND METHODS: Forty patients who had unilateral PAACG attack in the first 4 months after remission and 40 single eyes from 40 normal controls were enrolled in this cross-sectional study. For all cases, PAACG had resolved after treatment. Using the Stratus OCT, the RNFL was assessed in both eyes within 2 weeks after PAACG, and again after 4 months. The OCT parameters were compared among normal controls, the unaffected fellow eyes, and the attacked eyes within 2 weeks and at 4 months after remission. Of the 40 patients, 14 PAACG patients underwent 5 times measurements, respectively, within 2 weeks and at 1, 2, 3, and 4 months after intraocular pressure was controlled. Differences between affected eyes and fellow eyes for the mean RNFL thickness at various periods after remission were also compared. RESULTS: RNFL of the PAACG eyes became thicker (average: 142.6+/-22.9 microm) within 2 weeks and thinner (average: 83.6+/-19.8 microm) at 4 months after acute strike compared with the fellow unaffected and normal eyes. Significant differences were demonstrated comparing the average and 4-quadrant RNFL thicknesses for the attacked eyes with those of the normal controls (P<0.001 to 0.001) and fellow eyes (P<0.001 to 0.002) using 1-way analysis both within 2 weeks and at 4 months after remission. There was significant difference in the RNFL thickness among the 5 time points after intraocular pressure controlled in the acute strike group (P<0.001). CONCLUSIONS: Using OCT, RNFL thickness was found to increase in eyes immediately after an episode of PAACG followed by a decrease in RNFL thickness over time (up to 3 mo). This detection can aid in better understanding the pathologic retinal changes involved in PAACG, and help in the assessment and management of these patients.     

Comparison of longitudinal changes in circumpapillary retinal nerve fiber layer and ganglion cell complex thickness after acute primary angle closure: a 12-month prospective study

Purpose

To compare longitudinal changes in circumpapillary retinal nerve fiber layer (cpRNFL) and ganglion cell complex (GCC) thicknesses and factors that are related to changes in cpRNFL and GCC thicknesses after acute primary angle closure (APAC).

Study design

A prospective consecutive case series.

Methods

This study was a prospective, consecutive case series study including 64 eyes of 64 subjects with APAC. cpRNFL and GCC thicknesses were measured by RTVue-100 OCT. To measure cpRNFL and GCC thicknesses, the “three-dimensional (3D) optic disc scan and ONH scan” and “GCC” scan mode were used. Differences in cpRNFL and GCC thicknesses between the affected eye and fellow eye were compared, and logistic regression analysis was performed to investigate the factors associated with longitudinal changes in cpRNFL and GCC thicknesses.

Results

The average, superior and inferior cpRNFL, and GCC thicknesses were thicker in the affected eye than in the fellow eye within 1 week after remission and gradually decreased up to 12 months after remission. Compared with the cpRNFL and GCC thicknesses at 1 week after remission, the cpRNFL and GCC thicknesses at 1 month, 3 months, 6 months, and 12 months after remission were significantly thinner. Logistic regression analysis revealed that a longer duration from the onset of symptoms to adjustment of treatment (cpRNFL: odds ratio = 0.865, p = 0.003) (GCC: odds ratio = 0.824, p = 0.001) was associated with abnormal cpRNFL and GCC thicknesses.

Conclusion

A week after APAC both cpRNFL and GCC thicknesses were thicker in the affected eye than in the fellow eye and further decreased up to 12 months post APAC. A longer duration from the onset of symptoms to adjustment of treatment was associated with cpRNFL and GCC loss after APAC.

     

原发性急性闭角型青光眼发作后RNFL的变化

目的:观察原发性急性闭角型青光眼(primary acute angle-closure glaucoma,PAACG)发作缓解后视网膜神经纤维层(retinal nerve fiber layer,RNFL)厚度的变化规律。方法:PAACG发作患者36例在治疗缓解后2,4,8,12wk测量平均RNFL厚度和上方、颞侧、下方、鼻侧RNFL厚度,分别与对照眼比较并分析发作眼RNFL厚度随时间的变化。结果:RNFL厚度在2wk和4wk时,发作眼和对侧眼比较差异无显著性;发作眼重复测量分析结果表明,伴随访时间的延长发作眼各个象限的RNFL厚度逐渐变薄,其中2wk与4,8,12wk比较均有统计学意义(均P<0.01)。其余各时间之间差别无显著性意义。结论:PAACG单次发作缓解后对RNFL造成损害,这种损害主要发生于下方,在眼压缓解后8wk内仍继续进展。     

Damage patterns of retinal nerve fiber layer in acute and chronic intraocular pressure elevation in primary angle closure glaucoma

AIM: To observe the differences of damage patterns of retinal nerve fiber layer (RNFL) between acute and chronic intraocular pressure (IOP) elevation in primary angle closure glaucoma (PACG) using optical coherence tomography (OCT). METHODS: Twenty-four patients (48 eyes) with unilateral acute PACG (APACG) attack in the 6 months after admission and 36 patients (64 eyes) with chronic PACG (CPACG) were included in this prospective study. For all cases, IOP has been controlled under 21mmHg after treatment. Using stratus OCT, the RNFL thickness was assessed in eyes with PACG within 3 days, 2 weeks, 1, 3 and 6 months after IOP was controlled. Repeated measures ANOVA was used to examine the changes of RNFL thickness at different time after IOP being controlled in both acute attack eyes and unaffected fellow eyes of APACG and eyes with CPACG. RESULTS: The mean RNFL thickness for the APACG- attacked eyes increased significantly within 3 days (121.49±23.84)μm after acute onset and then became thinner along with time [(107.22±24.72)μm at 2 weeks,(93.58±18.37)μm at 1 month, (84.10±19.89)μm at 3 months and (78.98±19.17)μm at 6 months]. In APACG-attacked eyes, there were significant differences of average RNFL thickness at 5 different times after IOP was controlled (P＜0.001). In the APACG unaffected fellow eyes and CPACG eyes, there were no significant differences in mean RNFL thickness at 5 different times(F=0.450, P=0.104 in APACG unaffected fellow eyes and F=1.558, P=0.200 in CPACG eyes). There was significant difference for interaction between time periods and groups (F=1.912, P=0.003). CONCLUSION: RNFL damage patterns are different under different IOP elevated courses. In APACG, RNFL was found to be swollen and thickening right after acute attack and then becomes thinning and atrophy along with the time, while RNFL was found to be diffused thinness in CPACG.     

The damage patterns of retinal nerve fiber layer in acute and chronic intraocular pressure elevation in primary angle closure glaucoma

 Purpose: To observe the differences of damage patterns of retinal nerve fiber layer (RNFL) between acute and chronic intraocular pressure (IOP) elevation in primary angle closure glaucoma (PACG) using optical coherence tomography (OCT). Methods: Twenty four patients (48 eyes) with unilateral acute PACG (APACG) attack in the 6 months after remission and 36 patients (64 eyes) with chronic PACG (CPACG) were included in this prospective study. For all cases, IOP has been controlled less than 21 mm Hg after treatment. Using stratus OCT, the RNFL thickness was assessed in eyes with PACG within 3 days, 2 weeks, 1, 3 and 6 month after IOP controlled. Repeated measures ANOVA was used to examine the time course of changes after IOP controlled in RNFL thickness in both acute attack and unaffected fellow eyes of APACG and eyes with CPACG. Results: The mean RNFL thickness (μm) for the APACG-attacked eyes increased significantly within 3 days (121.49±23.84) after acute strike and then became thinner along with time (107.22±24.72 at 2 week, 93.58±18.37 at 1 month, 84.10±19.89 at 3 month and 78.98±19.17 at 6 month). In APACG-attacked eyes, there were significant differences of average RNFL thickness among 5 different times after IOP was controlled (P ＜ 0.001). In the APACG unaffected fellow eyes and CPACG eyes, there were no significant differences in mean RNFL thickness among 5 different times (F = 0.450, P = 0.104 in APACG unaffected fellow eyes and F = 1.558, P = 0.200 in CPACG eyes). There was significant difference for interaction between time periods and groups (F = 1.912,P = 0.003). Conclusion:  RNFL damage patterns are different under different IOP elevated courses. In APACG, RNFL was found to be swollen and thickening right after acute attack and then becomes thinning and atrophy along with the time, while RNFL was found to be diffused thinness in CPACG.     

激光眼底扫描仪(HRT-Ⅱ)对原发性开角型青光眼盘缘面积和神经纤维层厚度的检测

目的：评价原发性开角型青光眼(开青)各象限盘缘面积和神经纤维层(retinal nerve fiber layer RNFL)厚度同常人的差异。探讨开青患者盘缘面积和RNFL厚度同视野一致性关系。方法：利用海德堡激光眼底扫描仪(HRT—Ⅱ)检测正常人和开青患者各象限盘缘面积和RNFL厚度，对比正常人和开青组之间的关系。并将开青组盘缘面积和RNFL厚度减少最大的象限与视野缺损较重部位进行一致性比较。结果：正常人和开青患者各象限盘缘面积和RNFL厚度存在显著差异(P＜0．001)：开青患者盘缘面积和RNFL厚度减少最大的象限与视野缺损较重部位符合率达89．5％和85．1％。结论：激光眼底扫描仪(HRT—Ⅱ)在检测原发性开青型青光眼有较好敏感性和特异性。     

飞秒激光辅助的LASIK及机械角膜刀辅助的LASIK对视网膜神经纤维层厚度影响的比较

目的 比较飞秒激光辅助的LASIK与机械角膜刀辅助的LASIK对近视视网膜神经纤维层厚度的影响.方法 本院屈光治疗中心拟行近视LASIK手术的患者60例(120只眼),随机分为两组,分别于术前以及术后1周、4周,采用眼底相干光断层扫描视网膜神经纤维层厚度进行测量并行统计分析.结果 飞秒激光组术前视网膜神经纤维层平均厚度(102.25 ±7.43) μm;术后1周为(105.34 ±23.58)μm;术后4周(104.37 ±20.66) μm;机械角膜刀组术前视网膜神经纤维层平均厚度(104.70±13.23) μm;术后1周为(108.63±15.26)μm;术后4周为(107.87±15.29) μm;两组比较术前及术后不同时间段视网膜神经纤维层平均厚度无显著性差异.结论 利用飞秒激光辅助的LASIK与使用机械角膜板层刀辅助的LASIK引起的眼压变化对术后视网膜神经纤维层厚度无明显影响.     

Ex-press青光眼引流器植入术对视野和视网膜神经纤维层厚度影响

目的：观察并分析Ex-press 青光眼引流器植入术对原发性开角型青光眼视野和视网膜神经纤维层厚度影响。
　　方法：选取原发性开角型青光眼患者14例24眼,均行Ex-press青光眼引流器植入术。收集术前裸眼视力、眼压、角膜内皮细胞计数、视野平均缺损( MD)、视野模式标准差(PSD)、视网膜神经纤维层厚度,术后1wk,1、3mo的裸眼视力、眼压,术后3 mo的角膜内皮细胞计数、MD、PSD、视网膜神经纤维层厚度,观察随访期间的并发症及相关处理,统计手术成功率。
　　结果：术前,术后1wk,1、3mo 裸眼视力分别进行两两比较,得出差异均无统计学意义(P>0.05),术后视力无明显下降。术后1wk,1、3mo眼压与术前降低,差异有统计学意义(P<0.05),且术后3mo内眼压保持平稳。术后3mo视网膜神经纤维层厚度和术前比较差异有统计学意义(P=0.018)。术后3 mo MD绝对值和 PSD 较术前相比,差异均无统计学意义(P>0.05)。术后3mo的角膜内皮细胞较术前减少,差异有统计学意义(Z=-2.585,P=0.01)。手术成功率：完全成功19眼(79%),条件成功2眼(8%),失败3眼(13%)。
　　结论：Ex-press青光眼引流器植入术术后短时间内可能会引起视网膜神经纤维层厚度变薄,稳定的降眼压效果能有效减缓视野进展,手术未影响视力,降眼压效果好,是治疗原发性开角型青光眼安全、有效的手术方法。     

剥脱性青光眼患者视网膜神经纤维层厚度变化分析

目的：比较维吾尔族假性剥脱综合征(PEX)患者、剥脱性青光眼(PEXG)患者视网膜神经纤维层(RNFL)厚度,为早期诊断剥脱性青光眼提供理论依据。

方法：回顾性病例对照研究。选取2018-04/ 2020-06在我院就诊治疗的维吾尔族假性剥脱综合征患者70例70 眼,剥脱性青光眼患者 80例80 眼,按照视野缺损分期分为早中期剥脱性青光眼患者56眼、晚期剥脱性青光眼患者24眼,选取同期本院收治的维吾尔族年龄相关性白内障病例60例60 眼作为对照组。比较四组患者视盘不同位置RNFL厚度。

结果：对照组、假性剥脱综合征组及剥脱性青光眼组患者视野缺损(MD)逐渐加重且剥脱性青光眼组患者MD显著高于假性剥脱综合征组(P<0.01); 假性剥脱综合征组、早中期剥脱性青光眼组及晚期剥脱性青光眼组视盘不同位置RNFL厚度较对照组均变薄(均P<0.01); 假性剥脱综合征组患者视盘平均RNFL、下方、上方RNFL厚度均低于对照组(均P<0.01)); 晚期剥脱性青光眼组患者视盘各个位置RNFL厚度明显低于早中期剥脱性青光眼患者(均P<0.01)。

结论：维吾尔族假性剥脱综合征患者早期RNFL厚度较未患有剥脱综合征人群开始变薄,早期对于假性剥脱综合征患者RNFL进行检测有助于剥脱性青光眼疾病诊断并进行治疗。     

Changes in circumpapillary retinal vessel density after acute primary angle closure episode via OCT angiography

Purpose

To investigate the changes and evaluate the diagnosis value of circumpapillary vessel density (VD) in cases of acute primary angle closure (APAC).

Design

Case–control study.

Methods

APAC patients with a history of unilateral acute attack were enrolled. The eyes with acute episode constituted the case group while the contralateral eyes without attack consisted of the control group. Ophthalmic examinations including slit-lamp examination, best-corrected visual acuity, intraocular pressure and visual field were carried out. Retinal nerve fiber layer (RNFL), macular ganglion cell complex (GCC) were measured by spectral-domain optical coherence tomography, while VD was assessed by optical coherence tomography angiography.

Results

The whole en face image vessel density (wiVD), circumpapillary vessel density (cpVD) and inside disk VD for both all vessels and capillary were all significantly lower in the APAC eyes compared to the fellow eyes (P?<?0.01 for all). In APAC eyes, the wiVD, inside disk VD and cpVD both for all vessels and capillary were all positively correlated with RNFL and GCC thicknesses but negatively correlated with the mean deviation (MD), pattern standard deviation (PSD) and the duration of acute attack (all P?<?0.01). From the ROC curve, the cpVD_cap, wiVD_cap, cpVD_all and wiVD_all all showed comparable diagnostic ability with RNFL, GCC and MD to differentiate eyes with APAC from the fellow eyes (all P?>?0.05). The inside disk VD_cap and VD_all demonstrated significant lower diagnostic ability than the cpVD_cap, wiVD_cap, cpVD_all and wiVD_all (all P?<?0.001).

Conclusions

In APAC eyes, circumpapillary VD decreased significantly compared with the fellow unaffected eyes. They were significantly correlated with thicknesses of RNFL and GCC, and visual field MD and PSD in the APAC eyes. The patients with longer duration of acute attack were more likely to have lower cpVD. For APAC, the diagnostic ability of wiVD and cpVD was similar with RNFL, GCC and MD and was higher than inside disk VD.

     

Change in retinal nerve fiber layer thickness after laser in situ keratomileusis

PURPOSE: To determine the effect of laser in situ keratomileusis (LASIK) on retinal nerve fiber layer (RNFL) dropout. SETTING: Nevyas Eye Associates, Philadelphia, Pennsylvania, USA. METHODS: This prospective consecutive study comprised 120 eyes. The GDx((R)) nerve fiber analyzer (Laser Diagnostic Technologies, Inc.) was used to measure RNFL thickness, an early indicator of glaucomatous damage, preoperatively and 1 week to 4 months and 6 months postoperatively to determine whether any change in apparent RNFL thickness was due to corneal change or to actual RNFL damage and to determine whether apoptotic cascade caused ongoing RNFL dropout. Humphrey visual fields were done in eyes with an abnormal GDx (increase of 20 in GDx number). RESULTS: The GDx was normal in 89 eyes, including 6 eyes with tilted discs, an abnormal number, and a normal image and 15 eyes with a nonprogressive increase in the GDx number. Three eyes, normal at the interim, were abnormal at 6 months but had a normal visual field. Eleven eyes had a significant increase in the number at 6 months, including 1 eye that showed a possible glaucomatous visual field defect at 9 months and a normal visual field at 14 months. CONCLUSIONS: There was no evidence of RNFL thinning or glaucomatous damage. A new baseline GDx should be established post LASIK to correct for corneal change.