Combined Argon and Nd: YAG Laser Peripheral Iridectomy: A New Approach in Clinical Practice

Purpose: To evaluate the therapeutic effect of combind argon and Nd: YAG laser peripheral iridectomy.Methods: 151 cases (200 eyes) of primary angle-closure glaucoma and combined glaucoma were treated by combined procedure. Argon laser was the first used to create partial iridectomy in 2/3-3/4 thickness without penetrating pigmented epithelium, and then Nd: YAG laser was required to complete a patent iridectomy. Results: A successful iridectomy was achieved in all patients independent of any type of irides (100%). Iris penetration rate in one session presented in 95. 0%. Complications appeared to be less common in our patients: iris bleeding was only seen in 5. 0% cases; the postoperative inflammation was mild; corneal burns, lecalized lenticular opacities and closure of iridectomies were less frequent. The follow-up ranged from 3m to 6. 5 years. The success rate in controling IOP with/ without medications were 99. 0% except 2 eyes failur. No attack occured in 129 eyes with prophylatic laser therapy

Evaluation of the learning curve of laser peripheral iridectomy:the 20^(th)case reaches the turning point

AIM:To explore the learning curve for ophthalmologists at the start of laser peripheral iridectomy(LPI)training.METHODS:The learning curve of 4 doctor groups without previous LPI experience was studied.Three main parameters of LPI were reviewed:total energy,argon energy and neodymium-doped yttrium aluminum garnet(Nd:YAG)energy.Procedures were evaluated in cohorts of 20 cases to identify the turning points of the three variables.RESULTS:There was no significant difference in terms of age or eye among the 4 doctor groups.There were stable trends on the learning curve for the Doctor A and C groups regarding total energy and argon energy.In addition,the turning points on the learning curve were determined after the 20th procedure for the Doctor B and D groups regarding total energy and argon energy.Moreover,the Nd:YAG energy was relatively stable since the first procedure.CONCLUSION:It requires approximately 20 procedures for a beginner to reach a turning point on the learning curve regarding LPI.It can serve as a point of reference or guideline for training beginners to perform LPI.

Comparison of ultrasound biomicroscopy and spectraldomain anterior segment optical coherence tomography in evaluation of anterior segment after laser peripheral iridotomy

AIM：To quantitatively assess narrow anterior chamber angle using spectral-domain anterior segment optical coherence tomography（SD-AS-OCT） and ultrasound biomicroscopy（UBM）,and to evaluate the correlations and consistency between SD-AS-OCT and UBM.· METHODS：Fifty-five eyes from 40 patients were examined.Patients were diagnosed with primary angleclosure glaucoma（PACG） remission（11 eyes from 8patients）,primary angle closure（PAC,20 eyes from 20patients） and PAC suspect（24 eyes from 12 patients）.Each eye was examined by SD-AS-OCT and UBM after laser peripheral iridotomy（LPI）.The measurements of SD-AS-OCT were angle open distance（AOD）,anterior chamber angle（ACA）,trabecular iris angle（TIA）,and trabecular iris space area（TISA）.UBM measurements were AOD and TIA.Correlations of AOD500 and TIA500 between UBM and AS-OCT were assessed.All parameters were analysed by SPSS 16.0 and MedCalc.· RESULTS：ACA,TIA and AOD measured by SD-ASOCT reached a maximum at the temporal quadrant and minimum at the nasal quadrant.Group parameters of AOD500 and AOD750 showed a linear positive correlation,and AOD750 had less variability.UBM outcomes of AOD500 and TIA500 were significantly smaller than those of SD-AS-OCT.The results of the two techniques were correlated at the superior,nasal and inferior quadrants.CONCLUSION：Both UBM and SD-AS-OCT are efficient tools for follow-up during the course of PACG.We recommended using parameters at 750 μm anterior to the sclera spur for the screening and follow-up of PACG and PAC.The two methods might be alternatives to each other.

Progression rate to primary angle closure following laser peripheral iridotomy in primary angle-closure suspects: a randomised study

AIM:To report the progression rate(PR)to primary angle closure(PAC)following laser peripheral iridotomy(LPI)in PAC suspects(PACS).METHODS:Prospective,randomized controlled interventional clinical trial conducted at the Handan Eye Hospital,China.Totally 134 bilateral PACS,defined as non-visibility of the posterior trabecular meshwork for≥180 degrees on gonioscopy were randomly assigned to undergo LPI in one eye.Gonioscopy and Goldmann applanation tonometry were performed prior to,on day 7 and 12 mo post LPI.RESULTS:Eighty of 134 patients(59.7%)could be followed up at one year.The mean intraocular pressure(IOP)in treated eyes was 15.9±2.6 mm Hg at baseline,15.4±3.0 mm Hg on day 7;16.5±2.9 mm Hg at one month,and 15.5±2.9 mm Hg at 12 mo;the IOP in untreated eyes was similar(P=0.834).One or more quadrants of the angle opened in 93.7%of the LPI treated eyes,but 67.0%(53/79)remained closed in two or more quadrants.The PR to PAC in untreated eyes was 3.75%and one developed acute angleclosure glaucoma(AACG);the PR to PAC in treated eyes was 2.5%and none had developed peripheral anterior synechia(PAS)or AACG.CONCLUSION:LPI can open some of the occludable angle in the majority of eyes with PACS,but 67%continue to have non-visibility of the trabecular meshwork for over 180 degrees.

Associations of lens thickness and axial length with outcomes of laser peripheral iridotomy

AIM:To investigate the association of axial length(AL),lens thickness(LT),and lens vault(LV)with postoperative anterior chamber angle metrics after laser peripheral iridotomy(LPI).METHODS:Prospective observational study of 69 patients(97 eyes)were diagnosed as primary angle-closure suspect(PACS),primary angle closure(PAC)or primary angle-closure glaucoma(PACG).AL,LT,anterior central chamber depth(ACD),angle opening distance(AOD),trabecular iris angle(TIA),and angle recess area(ARA)were measured before and 1 wk after LPI.The association between AL,LT,LV with ACD,AOD,TIA,ARA were analyzed by comparing the differences between preoperative and postoperative measurements for anterior segment biometric parameters.RESULTS:ACD,AOD,TIA,and ARA were significantly increased after LPI(all P<0.05).Greater LT was significantly associated with greater postoperative increases in ACD,AOD,TIA,and ARA(all P<0.05).AL was not significantly associated with changes of anterior segment biometric parameters.Greater LV was significantly associated with greater postoperative increases in ACD,AOD,and TIA(all P<0.05),but was not significantly associated with changes of ARA.CONCLUSION:Greater baseline LT and LV measurements are associated with greater increases in anterior segment biometric parameters after laser peripheral iridotomy.AL are not associated with the change of anterior segment biometric parameters.

Roles of reinforced nerve conduits and low-level laser phototherapy for long gap peripheral nerve repair

Peripheral nerve injuries are common in clinical practice because of traumas such as crushing and sectioning. Lesions of the nerve structure result in lost or diminished sensitivity and/or motor activity in the innervated territory. The degree of lesion depends on the specific nerve involved, the magnitude and type of pres- sure exerted, and the duration of the compression. The results of such injuries commonly include axonal degeneration and retro- grade degeneration of the corresponding neurons in the spinal medulla, followed by very slow regeneration （Rochkind et al., 2001）. The adverse effects on the daily activities of patients with a peripheral nerve injury are a determining factor in establishing the goals of early recovery （Rodriguez et al., 2004）.

Efficacy of laser peripheral iridoplasty and iridotomy on medically refractory patients with acute primary angle closure： a three year outcome

Background Argon laser peripheral iridoplasty （ALPI） is proved to be effective in lowering intraocular pressure （lOP） of patients with mild acute primary angle closure （APAC）. It is unclear whether this laser treatment is equally efficient in managing patients with severe APAC. This study aimed peripheral iridotomy （LPI） on patients with refractory APAC, therapy. to evaluate the IOP-lowering efficacy of ALPI and laser who have previously responded poorly to intensive medical Methods Thirty-six patients （8 men and 28 women） were identified as medically refractory APAC, who still had ocular pain, red eye, hazy cornea, closed anterior chamber （AC） angle, and lOP of not less than 21 mmHg after two days or more of anti-glaucoma medication. All enrolled patients underwent ophthalmologic examinations including measurement of visual acuity （VA）, best corrected VA （BCVA）, lOP, biomicroscopy, and gonioscopy followed by ALPI immediately in the APAC eye and LPI in both eyes. Results All patients were affected unilaterally, with average age of （54.6±11.7） （range, 37.0-75.0） years old. The mean lOP value of the affected eyes dropped from （31.6±7.7） （range, 21.0-39.0） mmHg at enrollment to （18.4±8.7） （range, 10.0-27.0） mmHg 2 hours after ALPI. At follow-up day 7, the mean lOP value maintained at （14.8±4.2） （range, 9.0-21.0） mmHg, which was significantly different （P=0.000） compared with baseline. The average decrease of lOP in the APAC eyes was （16.8±7.4） （range, 12.0-21.0） mmHg. At follow-up three years later, the mean lOP of the APAC eyes stabilized at （16.3±3.2） （range, 9.0-20.0） mmHg with at least 180° of AC angle opened. Conclusion ALPI and LPI lower the lOP of medically refractory cases of APAC though they have responded poorly to anti-glaucoma medication.

Intervention of laser periphery iridectomy to posterior iris bowing in high myopic eyes

Background For some high myopic patients with posterior iris bowing, laser periphery iridectomy should be performed pre-operation to prevent pupil block glaucoma if these patients would have phakic intraocular lens implantation to correct high myopia. So we had the opportunity to analysis the influence of laser iridectomy on posterior iris bowing. Methods Eighteen high myopic patients with posterior iris bowing （11 males and 7 females） were involved in the study in Beijing Tongren Eye Center from March 2008 to July 2008. Phakic intraocular lens were implanted to correct their ametropia. The mean age was （32＋6） years （range, 25-40 years）. The center anterior chamber depth, the pupil diameter, the posterior iris bowing depth and the anterior chamber angle were measured with anterior segment coherence tomography （AS-OCT） under the normal condition, myosis condition induced by 2% pilocarpine, laser periphery iridectomy after myosis, and 2% pilocarpine eluting condition respectively. Results There was no significant difference of center anterior chamber depth under the four conditions （P=0.512）. The pupil constricted after pilocarpine （P=0.001）. After＇ laser iridectomy performed and pilocarpine eluted, posterior iris bowing depth reduced more than that in normal condition （P=0.003）. The anterior chamber angle reduced significantly after laser periphery iridectomy and pilocarpine eluted （P=0.012）. Conclusion Laser periphery iridectomy can reduce the posterior iris bowing, which might be due to the change in aqueous circulate pathway.

Predictors of angle widening after laser iridotomy in Chinese patients with primary angle-closure suspect using ultrasound biomicroscopy

AIM:To assess the predictive value of baseline parameters of ultrasound biomicroscopy(UBM) for angle widening after prophylactic laser peripheral iridotomy(LPI) in patients with primary angle-closure suspect(PACS).METHODS:Angle-opening distance(AOD),trabecular iris angle(TIA),iris thickness,trabecular-ciliary process angle,and trabecular-ciliary process distance were measured using UBM performed before and two weeks after LPI.Iris convexity(IC),iris insertion,angulation,and ciliary body(CB) size and position were graded.Uni-and multivariate regression analyses were used to determine factors predicting the change in AOD(ΔAOD500,calculated as an angle width change before and after LPI) in all quadrants and in subgroup quadrants based on IC.RESULTS:In 94 eyes of 94 patients with PACS,LPI led to angle widening with increases in AOD500 and TIA(P<0.01).Multivariable regression analysis showed that IC(P<0.001),CB position(P=0.007) and iris insertion(P=0.049) were significantly predictive for ΔAOD500.All quadrants were categorized into extreme IC(27.8%),moderate IC(62.3%),and absent IC(9.9%) subgroups.The AOD500 increased by 220% and no other predictive factor was found in the extreme IC quadrants.The AOD500 increased by 55%,and baseline iris angulation was predictive for smaller changes in ΔAOD500 in the moderate IC quadrants.CONCLUSION:In PACS patients,quadrants with greater iris bowing predict substantial angle widening after LPI.Quadrants with a flatter iris,anteriorly positioned CB,and basal iris insertion are associated with less angle widening after LPI.Quadrants with iris angulation as well as a flatter iris configuration predict a smaller angle change after LPI.

Intraocular pressure and gonioscopic findings in primary angle-closure disease in India—a big data study

AIM:To describe the gonioscopic profile and intraocular pressure(IOP)in primary angle-closure(PAC)disease in patients presenting to a tertiary eye care network in India.METHODS:A cross-sectional hospital-based study that included 31484 new patients presenting between 2011 and 2021.Patients with a clinical diagnosis of PAC/suspect/glaucoma were included.The data was collected from an electronic medical record system.RESULTS:PAC glaucoma(PACG)(47.55%)was the most common diagnosis followed by PAC(39.49%)and PAC suspect(PACS;12.96%).Female preponderance(54.6%)was noted with higher mean age at presentation among males(P<0.0001).PACS and PAC showed the highest prevalence in 6th decade but PACG was higher at 7th decade.The probability of angle opening was 95.93%,90.32%and 63.36%in PACS,PAC and PACG eyes respectively post peripheral iridotomy(PI).Plateau iris syndrome(PIS)was noted in 252 eyes and all showed post dilated rise of IOP.A post dilated IOP rise was also noted with 8.86%,33.95%and 57.19%eyes with PACS,PAC and PACG respectively with IOP rise between 6-8 mm Hg across the disease spectrum.CONCLUSION:The superior quadrant is the narrowest angle and difficult to open with indentation and post PI.The probability of angle opening is less in PIS especially the complete variety along with post dilated IOP rise.The post dilated IOP rise in angle closure eyes warrants a careful dilatation,especially with PIS.

激光周边虹膜切除术在原发性急性闭角型青光眼患者中的应用效果及对眼压和视力的影响

目的探讨激光周边虹膜切除术在原发性急性闭角型青光眼患者中的应用效果及对眼压和视力的影响。方法以随机法选取2020年10月至2022年10月的80例(86眼)原发性急性闭角型青光眼患者作为研究对象,所有患者给予激光周边虹膜切除术治疗。观察患者术前、术后的眼压、视力水平、房角关闭情况及角膜内皮细胞指标。结果术后,患者的眼压低于术前,视力水平高于术前(P<0.05)。术后,患者的前房角角度(ACA)、前房容积(ACV)和周边前房深度(PACD)均显著大于术前(P<0.05);术后,患者的中央前房深度(CACD)与术前比较,差异无统计学意义(P>0.05)。术后,患者的平均内皮细胞面积(AVE)、最大细胞面积(MAX)、最小细胞面积(MIN)、细胞密度(CD)、变异系数(CV)及细胞面积标准差(SD)与术前比较,差异无统计学意义(P>0.05)。结论原发性急性闭角型青光眼患者早期给予激光周边虹膜切除术治疗对降低眼压有明显效果,且还能提升视力水平,改善房角关闭情况,对患者角膜内皮细胞的损伤较小,安全性较高。

激光联合手术治疗原发性闭角型青光眼的研究进展

青光眼为不可逆性的致盲性疾病,我国原发性闭角型青光眼(primary angle closure glaucoma,PACG)是其主要类型,常见的手术治疗方式有超声乳化联合小梁切除术(青白联合术)和超声乳化联合房角粘连分离术等。本文对激光与白内障超声乳化联合房角分离术治疗原发性闭角型青光眼合并白内障的原理,多种激光联合手术治疗的临床应用、疗效及特点进行阐述。通过查阅文献并综述发现,控制眼压对原发性闭角型青光眼患者具有重要意义,激光治疗作为预防及治疗原发性闭角型青光眼的重要方法,具有简单、便捷、快速等优点,激光与超声乳化联合房角分离手术对于原发性闭角型青光眼合并白内障患者解除瞳孔阻滞,恢复前房正常解剖结构具有更好疗效。

Nd∶YAG激光周边虹膜切开对PACG急性发作期眼压的影响及安全性观察

目的 探究Nd∶YAG激光周边虹膜切开对原发性闭角型青光眼(PACG)急性发作期的治疗效果及安全性。方法 前瞻性选取2020年1月至2022年1月在首都医科大学附属北京世纪坛医院接受治疗的PACG急性发作期患者102例作为研究对象,按照随机数字表法将其分为研究组和对照组,每组各51例。对照组予以传统药物进行诊治,研究组接受Nd∶YAG激光周边虹膜切开治疗。记录并比较两组患者的术前,术后1、3、6、12个月眼压变化,术前,术后1、3、6、12个月疼痛视觉模拟评分法(VAS)评分、角膜内皮细胞[平均面积(AVE)、最大面积(MAX)、最小面积(MIN)、细胞密度(CD)、面积变异系数(CV)、面积标准偏差(SD)]变化,治疗后视野、房角情况以及并发症发生情况。结果 研究组患者术后1、3、6、12个月的眼压分别为(17.55±2.09)、(17.56±2.04)、(17.89±2.16)、(18.33±2.98)mmHg,均低于对照组[(19.87±1.98)、(20.55±1.78)、(17.89±2.16)、(18.33±2.98)mmHg],差异均有统计学意义(P<0.05)。研究组患者术后1、3、6、12个月的VAS评分分别为(4.03±0.64)、(3.22±0.15)、(2.31±0.14)、(1.99±0.13)分,均低于对照组[(4.66±0.74)、(3.55±0.12)、(2.98±0.11)、(2.32±0.15)分],差异均有统计学意义(P<0.05)。术后1个月,研究组患者的CD、CV、AVE、SD均高于对照组,MAX、MIN、六角形细胞百分数均低于对照组,差异均有统计学意义(P<0.05)。研究组患者治疗后视野缺损进展、开放角度减小发生率分别为3.92%、7.84%,均低于对照组(17.65%、23.53%),房角增大、开放角度>5°发生率分别为90.20%、62.75%,均高于对照组(45.10%、13.73%),差异均有统计学意义(P<0.05)。随访期内,两组患者发生高眼压、眼角膜水肿、眼前房渗出、眼前房出血情况及总并发症发生率比较,差异均无统计学意义(P>0.05)。结论 对于PACG急性发作期的患者,Nd∶YAG激光周边虹膜切开治疗较传统药物治疗在眼压控制、疼痛缓解以及视野缺损进展和房角变化等方面具有更显著的效果,且安全性较好,是一种有效且安全的PACG急性发作期治疗手段。

原发性房角关闭病人激光治疗决策辅助工具的研制

目的:研制基于共同决策理念的原发性房角关闭病人激光治疗决策辅助工具,为病人提供专业的决策支持,提高决策质量,促进医患共同决策。方法:基于渥太华决策支持框架和国际病人决策辅助工具标准,通过文献分析形成原发性房角关闭病人激光治疗决策辅助工具初稿;经2轮专家咨询,整合青光眼临床医学、眼科护理及公共卫生管理领域专家的意见形成修订版;通过临床调研了解病人及医务人员对工具可接受性的评价,进一步完善形成终稿。结果:共有19名专家完成专家咨询,专家积极性为95.0%、权威系数为0.918。2轮专家咨询后,该工具各级指标的协调系数分别为0.131,0.224和0.187(P<0.05)。临床调研发现,病人和医务人员对该工具的接受度高,认为其易于理解和使用,能够辅助决策。最终,原发性房角关闭病人激光治疗决策辅助工具包含阐明决策、评估决策需求、提供信息、分析风险收益、澄清价值观、引导决策制定和确认决策7项一级指标以及15项二级指标、32项三级指标。结论:原发性房角关闭病人激光治疗决策辅助工具具有一定的科学性和临床适用性,为病人参与病人安全,实现医患共同决策提供了科学、有效的支持手段。

雷珠单抗注射液辅助激光周边虹膜切开术治疗闭角型青光眼的临床研究

目的观察雷珠单抗注射液联合激光周边虹膜切开术(LPL)治疗闭角型青光眼的临床效果。方法本研究为前瞻性研究,选择河南科技大学第一附属医院2021年1月至2023年6月期间收治的112例闭角型青光眼患者为研究对象,基于随机、对照原则,采用计算机分组法将其列为常规组(56例)和联合组(56例),2组患者均实施LPL治疗,联合组采用雷珠单抗注射液辅助治疗,比较2组患者的前房参数,前方周边深度,眼内新生血管参数,眼压、视力恢复情况,及不良事件发生情况。结果在不同治疗方案下,联合组的中央前房深度(CACD)、前房角宽度(ACA)、前房容积(ACV)分别为(1.95±0.27)mm、(26±5)mm、(85±10)mm3,均高于常规组[(1.52±0.31)mm、(22±5)mm、(80±10)mm3];联合组的上方前房深度、下方前房深度、鼻侧前房深度分别为(1.15±0.25)mm、(1.36±0.27)mm、(1.13±0.33)mm,均高于常规组[(0.88±0.42)mm、(0.95±0.31)mm、(0.92±0.31)mm];联合组的肿瘤坏死因子-α(TNF-α)、白细胞介素-1(IL-1)、血管内皮生长因子(VEGF)分别为(30±5)ng/ml、(105±20)pg/ml、(85±10)pg/ml,均低于常规组[(33±5)ng/ml、(120±21)pg/ml、(90±10)pg/ml];联合组治疗1个月、3个月后眼压分别为(20±5)mmHg、(15±3)mmHg,均低于常规组[(23±5)mmHg、(18±4)mmHg];视力分别为(4.28±1.24)、(4.92±1.46),均高于常规组[(3.81±0.82)、(4.33±1.21)];联合组的不良事件发生率7.1%(4/56)低于常规组23.2%(13/56)(P<0.05)。结论雷珠单抗注射辅助LPL术可进一步改善闭角型青光眼患者的前房结构,对抑制眼内新生血管生成、促进眼压及视力恢复并降低不良事件发生风险均有积极意义。

ALPI联合白内障超声乳化及房角黏连分离术治疗急性闭角型青光眼合并白内障临床疗效

目的:观察激光周边虹膜成形术(ALPI)联合白内障超声乳化(Phaco)及房角黏连分离术(GSL)治疗急性闭角型青光眼(AACG)合并白内障的临床疗效。方法:选取2022年6月-2024年1月于我院眼科就诊的AACG合并白内障患者90眼作为研究对象行前瞻性研究,采用随机数表法分为观察组及对照组各45眼,对照组行Phaco联合GSL治疗,观察组行ALPI联合Phaco及GSL术;并于术前及术后1周、1月、3月、6月进行随访,收集2组术前及术后最佳矫正视力(BCVA)、眼压(IOP)、前房深度(ACD)、虹膜小梁夹角(TIA)、房角分级及术后前房出血、角膜水肿、前房炎性反应等并发症发生率,统计差异。结果:术后两组患者ACD均较术前加深,TIA增宽,BCVA提升,房角分级下降(P<0.05);且观察组术后各时间较对照组TIA更大、眼压更低,差异有统计学意义(P<0.05),两组术后各时间点ACD、房角分级、BCVA均无统计学差异(均P>0.05),且术后均未发生恶性青光眼、后囊破裂等严重并发症,并发症不良率与手术疗效差异均无统计学意义(P>0.05)。结论:ALPI联合白内障超声乳化及房角黏连分离术治疗AACG合并白内障患者,能有效增大TIA,缓解虹膜前粘连,进而降低患者眼压、具有稳定的临床疗效。

周边虹膜切除联合房角分离及房角切开术操作规范专家推荐意见

微创青光眼手术(MIGS)近年来在临床上得到广泛开展,其在治疗原发性闭角型青光眼(PACG)中的作用也逐渐突显。周边虹膜切除(SPI)联合房角分离(GSL)及房角切开术(GT)作为新型的微创联合术式,目前被证实在治疗合并透明晶状体或没有白内障手术指征的中晚期PACG中是安全、有效的,目前在临床上已用于青光眼患者的治疗,但其手术操作及围手术期用药仍缺乏统一的规范,影响了治疗效果的正确评价。国内部分青光眼治疗专家针对目前SPI联合GSL及GT治疗PACG应用中存在的问题制定详细、完整的规范专家推荐意见,包括手术适应证、麻醉方法、手术部位、手术步骤、围手术期用药方法,以规范临床医生应用该技术治疗PACG的医疗过程,为更好地评价MIGS疗效奠定基础。

SD-OCT检测Nd∶YAG激光周边虹膜切除术后黄斑区视网膜厚度变化

目的:探讨Nd∶YAG激光周边虹膜切除术(LPI)对原发性闭角型青光眼(PACG)患者黄斑区视网膜厚度的影响。方法:前瞻性研究。选取2019-10/2021-10我院PACG患者30例30眼为PACG组,同期健康体检者20名20眼为正常对照组(随机选取一眼)。PACG组患者接受LPI治疗,术后随访1mo。两组受试者均行最佳矫正视力(BCVA)、眼压、角膜内皮细胞、IOL Master 500光学测量仪测量前房深度(ACD)及眼轴长度(AL)、频域光学相干断层扫描(SD-OCT)检查黄斑区视网膜厚度。比较两组受试者及PACG组患者LPI前后ACD、眼压、AL和黄斑区视网膜厚度,并行相关性分析。结果:PACG组患者术后1wk, 1mo ACD较术前变深(均P<0.05)。PACG组患者手术前后眼压和AL均无差异(均P>0.05)。PACG组患者术前黄斑中心区,内外环上方、颞侧、下方、鼻侧,共9个区域视网膜厚度分别为243.50±13.24、324.50±13.46、308.83±15.94、310.00±14.24、314.50±16.29、300.67±19.95、290.17±12.58、302.40±16.37、307.33±14.84μm,正常对照组相应部位分别为266.14±16.16、342.67±15.86、327.95±16.41、337.85±13.03、341.24±15.58、313.76±17.59、290.24±16.29、303.81±13.91、323.01±14.80μm,两组间中心区、内环上方、颞侧、下方、鼻侧比较均有差异(均P<0.05)。PACG组术后1wk黄斑区9个区域视网膜厚度分别与术前相比均增加,术后1mo接近术前水平,但手术前后各分区比较均无差异(均P>0.05)。结论:与正常受试者比较,PACG患者黄斑区视网膜厚度较薄。PACG患者LPI术后早期黄斑区视网膜可变厚。

激光周边虹膜切开术联合抗VEGF药物治疗急性闭角型青光眼临床前期的效果研究

目的:探讨激光周边虹膜切开术(LPI)联合抗血管内皮生长因子(VEGF)药物治疗急性闭角型青光眼临床前期的效果。方法:回顾性分析2017年11月至2019年7月青岛市第八人民医院眼科中心收治的25例(25眼)急性闭角型青光眼临床前期患者的病历资料,所有患者均行LPI,同时术前1周向玻璃体腔内注射雷珠单抗注射液(0.5 mg/d)。比较患者术前及术后1周的中央前房深度(CACD)、周边前房深度(PACD)、前房容积(ACV)、前房角(ACA)及瞳孔直径(PD)。结果:25例患者术前的PACD分别为上方(0.87±0.14)mm、下方(1.11±0.17)mm、鼻侧(0.91±0.15)mm、颞侧(1.24±0.13)mm,与术后的(1.04±0.14)mm、(1.32±0.17)mm、(1.08±0.16)mm、(1.39±0.16)mm相比差异有统计学意义(P<0.05)。25例患者术前的ACV为(72.89±12.65)mm^(3),与术后的(88.22±14.64)mm^(3)相比差异有统计学意义(P<0.05)。25例患者术前的ACA为(21.58±3.07)mm,与术后的(24.48±2.50)mm相比差异有统计学意义(P<0.05)。25例患者术前的CACD为(1.92±0.19)mm,与术后的(1.95±0.17)mm相比差异无统计学意义(P>0.05)。25例患者术前的PD为(2.65±0.48)mm,与术后的(2.76±0.27)mm相比差异无统计学意义(P>0.05)。结论:LPI联合抗VEGF药物治疗急性闭角型青光眼临床前期可显著增加患者的PACD与ACV,是此病的有效治疗手段之一。

激光虹膜成形术治疗急性原发性闭角型青光眼的疗效观察

目的探讨激光虹膜成形术(LPIP)治疗急性原发性闭角型青光眼(APACG)的临床疗效。方法回顾性病例研究。本研究纳入2020年2月至2022年2月我院31例(33只眼)APACG,采用激光虹膜成形术治疗。比较治疗后1、2、6 h眼压、最佳矫正视力(BCVA)以及眼前节变化。结果治疗后1、2、6 h眼压均显著低于治疗前,治疗后1、2、6 h BCVA均高于治疗前(均P<0.05),治疗后1、2、6 h中央前房深度(ACD)、前房角角度(ACA)均显著升高(均P<0.05)。结论LPIP治疗APACG在降低眼压以及提升视力方面较为迅速,可以改善ACD、ACA。