Phacoemulsification versus small incision cataract surgery in patients with uveitis

AIMTo compare the safety and efficacy of phacoemulsification and small incision cataract surgery (SICS) in patients with uveitic cataract.METHODSIn a prospective, randomized multi-centric study, consecutive patients with uveitic cataract were randomized to receive phacoemulsification or manual SICS by either of two surgeons well versed with both the techniques. A minimum inflammation free period of 3mo (defined as less than 5 cells per high power field in anterior chamber) was a pre-requisite for eligibility for surgery. Superior scleral tunnel incisions were used for both techniques. Improvement in visual acuity post-operatively was the primary outcome measure and the rate of post-operative complications and surgical time were secondary outcome measures, respectively. Means of groups were compared using t-tests. One way analysis of variance (ANOVA) was used when there were more than two groups. Chi-square tests were used for proportions. Kaplan Meyer survival analysis was done and means for survival time was estimated at 95% confidence interval (CI). A P value of <0.05 was considered statistically significant.RESULTSOne hundred and twenty-six of 139 patients (90.6%) completed the 6-month follow-up. Seven patients were lost in follow up and another six excluded due to either follow-up less than six months (n=1) or inability implant an intraocular lens (IOL) because of insufficient capsular support following posterior capsule rupture (n=5). There was significant improvement in vision after both the procedures (paired t-test; P<0.001). On first postoperative day, uncorrected distance visual acuity (UDVA) was 20/63 or better in 31 (47%) patients in Phaco group and 26 (43.3%) patients in SICS group (P=0.384). The mean surgically induced astigmatism (SIA) was 0.86±0.34 dioptres (D) in the phacoemulsification group and 1.16±0.28 D in SICS group. The difference between the groups was significant (t-test, P=0.002). At 6mo, corrected distance visual acuity (CDVA) was 20/60 or better in 60 (90.9%) patients in Phaco group and 53 (88.3%) in the manual SICS group (P=0.478). The mean surgical time was significantly shorter in the manual SICS group (10.8±2.9 versus 13.2±2.6min) (P<0.001). Oral prednisolone, 1 mg/kg body weight was given 7d prior to surgery, continued post-operatively and tapered according to the inflammatory response over 4-6wk in patients with previously documented macular edema, recurrent uveitis, chronic anterior uveitis and intermediate uveitis. Rate of complications like macular edema (Chi-square, P=0.459), persistent uveitis (Chi-square, P=0.289) and posterior capsule opacification (Chi-square, P=0.474) were comparable between both the groups.CONCLUSIONManual SICS and phacoemulsification do not differ significantly in complication rates and final CDVA outcomes. However, manual SICS is significantly faster. It may be the preferred technique in settings where surgical volume is high and access to phacoemulsification is limited, such as in eye camps. It may also be the appropriate technique for uveitic cataract under such circumstances.

Cataract surgery in aged patients:phacoemul-sification or small-incision extracapsular cataract surgery

AIM: To evaluate the effects and safety of phacoemulsification (Phaco) or small-incision extracapsular cataract surgery (SICS) and intraocular lens (IOL) implantation for aged patients. METHODS: Totally 137 aged patients (149 eyes) underwent cataract operation in the case of stable systemic condition, the blood pressure less than 160/95mmHg, blood glucose less than 8mmol/L, and under the help of electrocardiogram surveillance by anesthesiologists during the operation. 106 aged patients (114 eyes) underwent Phaco while 31 aged patients (35 eyes) underwent SICS. The postoperative visual acuity, corneal endothelial cell loss, surgery time and major complications were observed and analyzed retrospectively. RESULTS: The best-corrected visual acuity (BCVA) of >= 0.6 was achieved in 135 eyes (92.6%) at 1 month postoperatively (chi(2)=259.730, P<0.001). For aged patients, both Phaco and SICS could significantly improve visual acuity with no significant difference (chi(2)=4.535, P > 0.05). Postoperative corneal endothelial cell loss was 18.6%, in PHACO group, the rate was 18.5%; in SICS group, the rate was 19.0%, the difference of which was no significant (chi(2)=0.102, P>0.05). The surgery time was different in two groups. No severe complications occurred. CONCLUSION: Both Phaco and SICS combined with IOL implantation for aged patients are effective and safe. Before surgery, detailed physical examination should be performed. When the systemic condition is stable, cataract surgery for aged patients is safe.

Comparison of surgically induced astigmatism in various incisions in manual small incision cataract surgery

AIMTo determine the surgically induced astigmatism (SIA) in Straight, Frown and Inverted V shape (Chevron) incisions in manual small incision cataract surgery (SICS).

Outcomes after combined excisional goniotomy and manual small incision cataract surgery

AIM: To report the long-term outcomes of combined excisional goniotomy and manual small incision cataract surgery(MSICS).METHODS: This is a retrospective case series of patients with open angle glaucoma and visually significant cataracts that underwent combined excisional goniotomy and MSICS with one-year follow-up. The medical history, demographic information, and clinical characteristics of each case were recorded. Data regarding changes in vision, intraocular pressure(IOP), the number of glaucoma medications, and the evolution of the disease after surgery were reported. RESULTS: Three patients, with open angle glaucoma and cataracts underwent combined excisional goniotomy and MSICS without adverse events. All patients had improvement in vision compared to baseline measurements. The range of IOP at baseline was from 14 to 18 mm Hg and decrease to a range of 10 to 14 mm Hg after one year of follow-up. Additionally, two patients also decreased their dependence on IOP-lowering medications at the last follow up visit with one patient maintaining baseline level of medication use.CONCLUSION: A combination of excisional goniotomy and MSICS illustrates both the safety and efficacy to treat patients with visually significant cataract and glaucoma. This procedure allows for a more cost-effective surgical approach that matches the needs of resource strained territories around the globe.

A reasonable option in vitrectomized eyes: manual small incision cataract surgery

Dear Sir,It is known that cataract surgery is challenging in vitrectomized eyes.Cataract surgeons may have encountered with posterior capsular complications and nucleus drop events even with minimal ocular manipulations and low irrigation bottle height.Inadvertent damage to the zonular fibers,posterior or peripheral lens capsule with ocutome or microvitreoretinal(MVR)blade in previous

Visual outcome of manual small-incision cataract surgery:comparison of modified Blumenthal and Ruit techniques

AIM:To compare the efficacy and visual results of the modified Blumenthal and Ruit techniques for manual small-incision cataract surgery(MSICS).· METHODS:This was a prospective,non-randomized comparison of 129 patients with senile cataracts scheduled to undergo routine cataract surgery via either a superior scleral tunnel incision,i.e.,the Blumenthal technique(group 1,n = 64) or a temporal scleral tunnel incision,i.e.,the Ruit technique(group 2,n =65).MSICS and intraocular lens implantation were performed through an unsutured 6.5-to 7.0-mm scleral tunnel incision.Uncorrected and corrected visual acuity,intraoperative and postoperative complications,and surgically induced astigmatism calculated by simple subtraction were compared.Patients were examined at 1 day,1 week,1 month,and 3 months after surgery.· RESULTS:Both groups achieved good visual outcome with minor complications.Three months after surgery,the corrected visual acuity was 0.73 in the Blumenthal group and 0.69 in the Ruit group(P =0.29).The average(SD) postoperative astigmatism was 0.87(0.62) diopter(D) for the Blumenthal group and 0.86(0.62) D for the Ruit group.The mean(SD) surgically induced astigmatism was 0.55(0.45) D and 0.50(0.44) D for the Blumenthal and Ruit groups,respectively(P =0.52).Common complications were minimal hyphema and corneal edema.There was no statistically significant difference in the complication rate between the groups(P >0.05).· CONCLUSION:In MSICS,both the Blumenthal and Ruit techniques achieved good visual outcomes,with low complication rates.

Incision Site in Manual Small Incision Cataract Surgery in Case of Preoperative Direct Astigmatism

We compared surgically induced astigmatism (SIA) by a superior incision with a temporal incision in manual small incision cataract surgery (MSICS), in patients with bilateral direct (regular) preoperative corneal astigmatisms. Patients and method: We carried out a prospective study from July 1st 2018 to September 30th 2019 in the department of ophthalmology at the University Hospital of Brazzaville. Keratometric readings were recorded before surgery to assess preoperative corneal astigmatisms. Keratometric evaluation was done 45 days post-operatively. Patients were followed 90 days after surgery in order to assess the healing of the surgical site. The surgically induced astigmatism (SIA) is the difference in the magnitude vectors between the preoperative and postoperative astigmatism. The result was positive if the postoperative astigmatism was greater than the preoperative astigmatism and negative if the postoperative astigmatism was less than the preoperative astigmatism. Results: Our study sample included 48 eyes from 24 patients, including 24 operated on temporal incision and 24 in superior incision. The average SIA for superior incisions was 0.33 ± 1.55 diopters (D), versus 0.33 ± 1.44 for temporal incisions. For superior incisions the SIA was 0.81 for astigmatisms lower than 2D, against 0.16D for the temporal incisions. On the other hand, for preoperative astigmatisms greater than 2D, the surgically induced astigmatism was &plusmn;0.62D, marking a decrease in preoperative astigmatism for the superior incisions against an increase of 0.5D for the temporal incisions. The healing was delayed for the temporal incisions responsible for discomfort persisting beyond 45 days. Conclusion: The temporal incision had better results than the superior incision for astigmatisms lower than 2D, and less good for astigmatisms higher than 2D. The temporal incision healed less well.

The early change of corneal vertical coma and trefoil in 2.8-mm superior incision cataract surgery

Background: To investigate early change of corneal aberrations after 2.8-mm superior incision phacoemulsification.Methods: This study comprised 80 eyes of 75 patients. All the patients underwent phacoemulsification with monofocal foldable intraocular lens(IOLs) implanted through a 2.8-mm superior corneal incision. The anterior corneal wavefront aberrations for the 6.0-mm pupillary diameter was measured by i Trace wavefront aberrometer(Tracey Technologies, Inc.) preoperatively and 1 month postoperatively. Changes of root mean square(RMS) values of Z(3,-3), Z(3, 3), Z(3,-1), Z(3, 1), and Z(4, 0) and total high order aberration(HOA) were evaluated.Results: The uncorrected and corrected visual acuities improve significantly(P<0.001). No significant postoperative changes were observed in spherical aberration(P=0.652). Significant changes in vertical coma and vertical trefoil(0.005±0.214 vs.-0.049±0.242, P=0.037;-0.141±0.222 vs.-0.258±0.359, P=0.001; separately). However, the total HOAs increased after cataract surgery(0.567±0.161 vs. 0.688±0.343, P<0.001).Conclusions: Corneal vertical coma and vertical trefoil changes significantly in 2.8mm superior corneal incision phacoemulsification cataract surgery. In addition, those had a trend to negative direction.

Astigmatism following Small Incision Cataract Extraction through Superotemporal Incision

Purpose:.To investigate the occurrence of corneal incision-induced astigmatism following small incision extracapsular cataract extraction through a superotemporal incision combined with intraocular lens (IOL) implantation. Methods:.A total of 255 cases (301 eyes) who received small incision extracapsular cataract extraction through a superotemporal incision with IOL implantation in the Department of Ophthalmology, Yuyan District Hospital of Guiyang were enrolled in this clinical trial..Postoperative best-corrected visual acuity and astigmatism were measured. The patients underwent 24-week follow-up. Results: In total, 166 patients (65.1%, 166 eyes) completed follow-up..Astigmatism gradually declined between 1 and 12-week postoperatively, and stabilized after 12 weeks. Among 166 patients,.125(75.3%).had astigmatism > 0.5 D at 24 weeks post-operatively,.showing mostly with-the-rule astigmatism. Visual acuity steadily improved up to 12 weeks, and tended to stabilize subsequently..Over the period of 24-week postoperatively,.visual acuity was negatively correlated with astigmatism (r=-0.691,P<0.05). Conclusion:Superotemporal small incision extracapsular extraction combined with IOL implantation is associated with modest astigmatism which declines over the post-operative period.

Assessment of visual outcomes of cataract surgery in Tujia nationality in Xianfeng County, China

AIM: To evaluate the visual outcome and factors influencing visual outcome of manual small incision cataract surgery(MSICS) in the rural area in the Xianfeng County.METHODS: Eighty-two eyes of 82 patients who underwent cataract surgery performed by using MSICS technique were identified. Data collected included each patient’s age, gender, the level of education. Uncorrected and corrected distance visual acuity(UDVA and CDVA) at presentation and at 1, 6, 8wk postoperatively, pre-existing eye disease, operative findings and complications, the risk factors were evaluated.RESULTS: In 82 patients, the average age was 69.6±0.6y, illiterate were 52(63.4%). Of 82 eyes, pseudophakia was present in 77 eyes(93.9%). At 1wk postoperatively,47 eyes(57.3%) had the UDVA of ≥6/18, and 52 eyes(63.4%) had the CDVA of ≥6/18. At 6 to 8wk postoperatively, 50 eyes(61.0%) had UDVA of ≥6/18, and57 eyes(69.5%) had the CDVA of ≥6/18. Postoperative visual status was significantly related to the co-morbidities, such as corneal pathology, glaucoma(P 【0.001).Operative complications, such as posterior capsule opacity and cystoid macular edema were main operative cause for the poor visual outcome.CONCLUSION: MSICS provides a good visual recovery in our study but the vision outcome did not fulfill the standards proposed by WHO, which highlights the need for an improvement in local socioeconomic understanding, population education and surgery quality.

改良2.5 mm辅助切口MSICS术对白内障患者手术性散光及角膜内皮细胞的影响

目的探讨改良2.5 mm辅助切口手法无缝线小切口非超声乳化白内障手术(MSICS)对白内障患者手术性散光及角膜内皮细胞的影响。方法 620例(780只眼)白内障患者依据随机数字表法将患者分为2组:观察组行改良2.5 mm辅助切口MSICS术,对照组行MSICS术,比较两组患者视力、手术形散光值、角膜内皮细胞变化。结果两组患者术后裸眼视力均显著改善(P<0.05),但观察组改善程度优于对照组(P<0.05);两组患者术后散光值均显著降低(P<0.05),但观察组术后1周和2周的散光值显著低于对照组(P<0.05);观察组角膜内皮密度计数损失率和角膜六角形细胞比例下降幅度显著低于对照组(P<0.05);观察组术后不良反应率(15.9%)显著低于对照组(26.8%)(P<0.05)。结论改良2.5 mm辅助切口MSICS术能够有效预防白内障患者术后手术性散光发生,降低角膜内皮损伤,提高视觉质量,是白内障患者手术治疗的另一重要选择。

2种长度切口MSICS联合IOL植入术的角膜地形图分析

目的探讨2种长度切口对手法小切口白内障摘除联合人工晶状体植入术（manual small incisioncataract surgery with intra-ocular lens implantation,MSICS＋IOL）后角膜地形图的影响。方法将拟行MSICS＋IOL的患者89例89只眼（核硬度Ⅳ~Ⅴ级）分为2组,A组45只眼核硬度Ⅳ级,B组44只眼核硬度Ⅴ级,分别行5.5 mm、6.5 mm巩膜隧道切口的MSICS＋IOL,用角膜地形图仪观察手术前、手术后1周及1个月时的角膜形态变化。结果术后1周及1个月时,B组角膜表面散光值（cylinder,CYL）、平均角膜曲率（average cornealpower,ACP）值均大于A组,差异有统计学意义（P〈0.05）;术后1周,B组角膜表面非对称指数（surface asym-metry index,SAI）较A组增加,差异有统计学意义（P〈0.05）,术后1个月时则与A组大致相同（P〉0.05）;2组术后1周、1个月的角膜表面规则指数（surface regularity index,SRI）差异无统计学意义（P〉0.05）。结论切口长度为5.5 mm的MSICS＋IOL手术较6.5 mm对术后早期角膜散光影响小;切口长度为5.5 mm的MSICS＋IOL手术和6.5 mm长度切口者对术后早期角膜的规则性影响相似。

Addressing the MSICS learning curve: identification of instrument-holding techniques used by experienced surgeons

AIM: To identify instrument holding archetypes used by experienced surgeons in order to develop a universal language and set of validated techniques that can be utilized in manual small incision cataract surgery(MSICS) curricula. METHODS: Experienced cataract surgeons performed five MSICS steps(scleral incision, scleral tunnel, side port, corneal tunnel, and capsulorhexis) in a wet lab to record surgeon hand positions. Images and videos were taken during each step to identify validated hand position archetypes.RESULTS: For each MSICS step, one or two major archetypes and key modifying variables were observed, including tripod for scleral incision, tripod-thumb bottom for scleral tunnel, underhand-index to thumb grip for side port, index-contact tripod for corneal entry, and tripodforceps for capsulorhexis. Key differences were noted in thumb placement and number of fingers supporting the instrument, and modifying variables included index finger curvature and amount of flexion.CONCLUSION: Identification of optimal hand positions and development of a formal nomenclature has the potential to help trainees adopt hand positions in an informed manner, influence instrument design, and improve surgical outcomes.

年轻眼科医师基于手术模拟器的小切口白内障囊外摘除手术培训的有效性评估

目的:探讨基于手术模拟器操作训练在眼科年轻医师小切口白内障囊外摘除手术培训的有效性评估。方法:前瞻性对照研究。选取2020/2022年在沈阳何氏眼科医院已完成至少3a住院医师规范化培训的眼科专业住院医师或刚取得主治证书的眼科主治医师共48名为研究对象,通过小切口白内障囊外摘除手术相关理论培训及考核后,随机分为模拟器手术操作训练组(试验组)和实体动物眼手术操作训练组(对照组),每组各24名。试验组和对照组医师分别使用手术模拟器和猪眼进行训练。训练结束后使用手术模拟器和实体猪眼操作对两组研究对象进行考核评分,并对两组医师的总体培训效果进行有效性评估。结果:手术模拟器考核评分及用时比较,试验组研究对象在各步骤考核用时均低于对照组(均P<0.05)。试验组研究对象在角膜穿刺注入黏弹剂、娩核及水密角膜穿刺口操作评分与对照组比较均无差异(P>0.05),其余步骤评分,试验组均高于对照组(均P<0.05)。实体动物眼考核评分,试验组研究对象各步骤考核评分均高于对照组(均P<0.05)。试验组研究对象在巩膜切口、角巩膜隧道、连续环形撕囊、水分离及转核至前房、娩核步骤手术模拟器与实体动物眼考核评分比较均无差异(P=0.068、0.126、0.960、0.520、0.206);在穿刺注入黏弹剂、隧道穿刺进入前房及水密角膜穿刺口考核中,模拟器评分均低于实体动物眼(P=0.007、0.014、<0.01);在皮质吸除、人工晶状体植入操作考核时模拟器评分要高于实体动物眼操作评分(P=0.035、<0.01)。结论:将手术模拟器操作训练应用于眼科年轻医师小切口白内障囊外摘除手术技能培训,可以显著提升医师的白内障显微手术操作技能,为建立眼科年轻医师规范化的白内障手术培训提供了新的模式及思路。

小切口非超声乳化白内障手术治疗硬核白内障的临床效果评价

目的探讨硬核白内障患者采用小切口非超声乳化白内障手术治疗的效果。方法选取2021年1月—2022年12月泰兴市第二人民医院收治86例硬核白内障患者为研究对象,按随机数表法分为对照组(n=43)予常规超声乳化白内障手术,观察组(n=43)予以小切口非超声乳化白内障手术,比较两组手术效果。结果术前、术后1个月两组视力水平对比,差异无统计学意义(P>0.05);术后1 d、术后1周时,观察组视力水平分别为(0.52±0.14)、(0.67±0.19)高于对照组,差异有统计学意义(t=4.420、4.334,P<0.05)。术前、术后1 d、术后1周时两组患者角膜散光度比较,差异无统计学意义(P>0.05),观察组患者术后1 d与1周时角膜散光度低于对照组,差异有统计学意义(P<0.05)。观察组术后并发症率为4.65%低于对照组的20.93%,差异有统计学意义(P<0.05)。结论对硬核白内障患者采用小切口非超声乳化白内障手术治疗的效果确切,可利于患者视力的快速恢复,并可改善角膜散光度,降低并发症率。

小切口非超声乳化白内障手术在硬核白内障患者中的应用效果

目的 探究分析对硬核白内障患者采用小切口非超声乳化白内障手术的临床治疗效果。方法 选取2021年1月—2022年2月期间内盐城市第三人民医院眼科中102例硬核白内障患者,根据随机数字表法分为对照组(51例,传统超声乳化术)与观察组(51例,小切口非超声乳化白内障手术)。比较两组患者术后泪膜功能、角膜改善程度以及视力水平。结果 治疗后,观察组患者治疗3个月后的角膜内皮细胞密度为(2.61±0.30)千个/mm^(2),高于对照组的(2.48±0.28)千个/mm^(2),且细胞面积、角膜厚度、主观干眼症评分低于对照组,泪膜破裂时间长于对照组,差异有统计学意义(P<0.05);观察组治疗后1 d的视力水平(0.74±0.18)高于对照组(0.66±0.16),差异有统计学意义(t=2.372,P<0.05)。结论 通过小切口非超声乳化白内障手术治疗的硬核白内障患者,视力水平、泪膜功能、角膜细胞均得到显著改善,值得应用和普及。

小切口非超声乳化白内障手术治疗硬核白内障的疗效及安全性分析

目的观察分析硬核白内障患者临床施行小切口非超声乳化白内障手术治疗对临床疗效及症状的改善作用。方法根据随机数表法将2020年1月-2021年12月本院60例硬核白内障患者分为对照组(30例,应用行超声乳化白内障术)、观察组(30例,应用小切口非超声乳化白内障手术)。对比两组手术效果、术后裸眼视力、手术时间及角膜散光度、并发症情况。结果观察组总有效率96.67%高于对照组76.67%,P<0.05;两组术后3个月的裸眼视力比较差异不显著,P>0.05;术前,对比角膜散光程度及内皮细胞计数,两组之间的差异均不显著,P>0.05;观察组的手术时间短于对照组,且术后1个月的角膜散光程度及内皮细胞计数低于对照组,P<0.05;观察组并发症情况经评估为6.67%,对照组为26.67%,差异较大,P<0.05。结论小切口非超声乳化白内障手术用于硬核白内障患者治疗,手术时间较短,且可改善其术后裸眼视力及角膜散光度,且术后并发症风险降低,临床疗效及安全性较高,此方案值得临床推广。

The evolution of corneal and refractive surgery with the femtosecond laser

The use of femtosecond lasers has created an evolution in modern corneal and refractive surgery.With accuracy,safety,and repeatability,eye surgeons can utilize the femtosecond laser in almost all anterior refractive procedures;laser in situ keratomileusis(LASIK),small incision lenticule extraction(SMILE),penetrating keratoplasty(PKP),insertion of intracorneal ring segments,anterior and posterior lamellar keratoplasty(Deep anterior lamellar keratoplasty(DALK)and Descemet's stripping endothelial keratoplasty(DSEK)),insertion of corneal inlays and cataract surgery.As the technology matures,it will push surgical limits and open new avenues for ophthalmic intervention in areas not yet explored.As we witness the transition from femto-LASIK to femto-cataract surgery it becomes obvious that this innovation is here to stay.This article presents some of the most relevant advances of femtosecond lasers to modern corneal and refractive surgery.

小切口非超声乳化白内障手术治疗硬核白内障的效果分析

目的研究并分析小切口非超声乳化白内障手术治疗硬核白内障的效果。方法选取2021年8月—2022年7月本院收治的100例硬核白内障患者作为本次研究对象,按照计算机表法分为对照组和实验组,每组各50例。对照组采用传统超声乳化手术,实验组采用小切口非超声乳化白内障手术,将两组患者角膜改善情况、前房房水炎症指标变化情况、散光度、视力变化情况以及并发症发生情况进行比较。结果治疗后,实验组角膜内皮细胞密度大于对照组,细胞平均面积以及角膜厚度小于对照组;两组患者闪光以及细胞计数均有所增加,实验组少于对照组;实验组散光度低于对照组,实验组视力高于对照组;实验组并发症总发生率明显少于对照组,上述组间差异均有统计学意义(P<0.05)。结论采用小切口非超声乳化白内障手术治疗硬核白内障患者,有效改善患者的角膜基本情况,提高了患者视力,减少并发症发生,治疗安全性较好,值得在临床中推广与应用。

低倍镜补偿景深超声乳化手术和小切口白内障手术对比观察

目的:观察低倍镜补偿景深下超声乳化白内障摘除术和小切口白内障囊外摘除术的临床疗效。方法:回顾性分析869例1258眼白内障患者手术治疗的情况,其中采用超声乳化白内障摘除手术者共计247例432眼;采用小切口白内障摘除术者共计622例826眼,对患者的术后视力、角膜内皮计数、角膜水肿情况及并发症进行统计学分析。结果:两组患者术后1wk,1mo视力恢复情况和术后1d角膜水肿情况无统计学差异(P>0.05);角膜内皮计数损失小切口白内障摘除手术组较超声乳化白内障摘除组略好(P<0.05)。结论:基层医院手术显微镜景深不够清晰的情况下,仍可采用低倍镜补偿景深开展小切口白内障囊外摘除术和超声乳化白内障摘除术。