猴光学离焦性与形觉剥夺性近视眼视网膜形态及超微结构比较

目的对比观察光学离焦性和形觉剥夺两种诱导方法所致恒河猴近视眼视网膜形态与超微结构的变化。方法年龄1.0～1.5个月的健康恒河猴15只,1只眼为实验眼配戴-3.00D镜片(9只眼)或散射镜片(6只眼),造成光学离焦或形觉剥夺;另1只眼作为对照眼。处理后不同时间用角膜地形图、睫状肌麻痹下验光、A超动态观察猴眼屈光状态和眼轴的变化;用相干光断层扫描术(OCT)动态观察视网膜厚度的变化,并与组织学测量值进行比较;3个月后,光镜和电镜下对比观察光学离焦、形觉剥夺性近视眼和对照眼视网膜超微结构的变化。结果15只猴实验眼均形成近视眼,光学离焦和形觉剥夺性近视眼视网膜均可见视杆细胞外节较长,视锥细胞膜盘减少,膜盘间隙增大,视网膜神经上皮层均较对照眼薄(均P<0.05);视网膜神经上皮层和色素上皮层厚度的OCT测量值与经校正后的组织学测量值比较差异均无统计学意义(P>0.05)。结论实验性近视眼视网膜超微结构与对照眼明显不同,但光学离焦和形觉剥夺性近视眼视网膜超微结构变化很相似。这种改变在近视眼发生、发展过程中的意义有待进一步探讨。     

多焦视网膜电图对近视眼的临床研究

目的:测试近视眼患者的多焦视网膜电图的改变。方法:应用美国EDI公司生产的VERISScience4.2多焦视网膜电图检查仪对24例48眼近视患者,22例44眼正常者进行检测,分析其总体和6个环形视网膜区域的反应。结果:近视患者总体和6个环形视网膜区域的反应密度均低于正常者,潜伏期无明显改变。结论:近视患者多焦视网膜电图的反应密度下降,这种改变主要是由于视网膜感受器功能受损所致。     

豚鼠近视眼视网膜Müller细胞的原代培养

目的研究豚鼠近视眼视网膜Müller细胞原代培养的方法。方法用半透明眼罩遮盖法建立豚鼠的近视眼模型。采用酶消化法培养豚鼠近视眼视网膜Müller细胞,用倒置相差显微镜观察Müller细胞的生长状况,以GFAP、Vimentin免疫组化染色进行细胞鉴定。结果半透明眼罩遮盖豚鼠右眼2周后,遮盖眼眼轴延长,近视形成。原代培养的视网膜Müller细胞贴壁生长,胞体较大、扁平,GFAP、Vimentin免疫组化染色呈阳性。结论酶消化法是培养豚鼠近视眼视网膜Müller细胞的一种有效方法。     

光学离焦性近视眼视网膜pax-6基因表达的研究

目的 研究幼猴光学离焦性近视眼发生、发展过程中视网膜pax-6 基因的表达情况，探讨pax-6基因是否参与近视眼的发生、发展和正视化过程。 方法 选用猴龄为1~3个月的恒河猴9只，采用配戴眼镜或施行角膜屈光手术的方法，造成幼猴视网膜光学离焦。用反转录聚合酶链反应及定量分析方法检测不同时间视网膜pax-6基因的表达，并与非光学离焦眼进行比较。 结果 远视性光学离焦导致幼猴玻璃体腔增长速度加快，形成近视眼，其视网膜pax-6 基因表达量明显比正常对照眼高（t=3.480，P=0.004）。 结论 远视性光学离焦幼猴的视网膜pax-6 基因表达明显增加，表明pax-6基因可能参与视觉依赖的眼球生长和正视化过程。 （中华眼底病杂志，2003，19：201-268）     

豚鼠近视眼视网膜Müller细胞的原代培养

目的 研究豚鼠近视眼视网膜Muller细胞原代培养的方法.方法 用半透明眼罩遮盖法建立豚鼠的近视眼模型.采用酶消化法培养豚鼠近视眼视网膜Müller细胞.用倒置相差显微镜观察Müller细胞的生长状况,以GFAP、Vimentin免疫组化染色进行细胞鉴定.结果 半透明眼罩遮盖豚鼠右眼2周后,遮盖眼眼轴延长,近视形成.原代培养的视网膜Müller细胞贴壁生长,胞体较大、扁平,GFAP、Vimentin免疫组化染色呈阳性.结论 酶消化法是培养豚鼠近视眼视网膜Müller细胞的一种有效方法.     

光感受器间维生素A类结合蛋白在豚鼠离焦诱导型近视眼中的表达

背景目前近视的发病机制尚不明确。视黄酸作为一种近视相关性因子调控实验性近视的发生发展,但转运维生素A类物质的蛋白是否参与实验性近视的形成和近视中视黄酸的转运系统目前研究较少。目的研究豚鼠离焦型近视眼视网膜中光感受器间维生素A类结合蛋白（IRBP）的表达变化,探讨IRBP表达对实验性近视的作用机制。方法将3～4周龄的花色豚鼠50只按随机数字表法分成3组,空白对照组10只,离焦I组和离焦Ⅱ组各20只。离焦I组和离焦Ⅱ组豚鼠左眼作为自身对照眼,右眼戴-10．00D凹透镜,分别戴镜14d、28d后摘去镜片,测量双眼实验前后屈光度及眼轴长度。应用免疫组织化学法及Westernblot法检测各组豚鼠视网膜中IRBP蛋白的表达变化,应用逆转录聚合酶链反应（RT—PCR）技术检测视网膜中IRBPmRNA的表达变化。结果右眼戴镜14d、28d后与左眼相比,离焦I组和Ⅱ组豚鼠分别形成了（一5．53±1．93）D和（一8．69±2．46）D的相对近视,眼轴分别延长（0．3l±0．15）mm和（0．41±0．13）mm,I组和Ⅱ组豚鼠离焦眼屈光度、眼轴长度的前后变化差异均有统计学意义（屈光度：F组别=1．90,P=0．04;F聃I=2．08,P〈0．05;F造模前后=2．43,P〈0．05。眼轴长度：F组别=2．04,P〈0．05;F眼别=4．15,P〈0．05;F造模前后=6．40,P〈0．05）,离焦Ⅱ组屈光度的绝对值增加较离焦I组明显（P〈0．05）。戴镜后离焦I组、Ⅱ组左眼及空白对照组的屈光度和眼轴长度比较差异均无统计学意义（P〉0．05）。免疫组织化学染色表明,离焦I组和Ⅱ组右眼测得的IRBP蛋白表达的平均灰度值为165．62：t=4．93和171．00±4．25,明显高于各组的左眼值和空白对照眼的156．31±4．00、155．26e3．49、158．61±4．58,且离焦Ⅱ组右眼IRBP表达量低于离焦I组右眼,差异均有统计学意义（P〈0．05）;Westernblot检测发现,与自身对照眼及空白对照组相比,离焦I组和Ⅱ组右眼视网膜IRBP蛋白表达下调;RT-PCR检测表明,离焦I组和Ⅱ组右眼视网膜IRBPmRNA表达减少,与自身对照眼和空白对照组相比差异均有统计学意义（P〈0．05）。结论视网膜IRBP的表达变化可能在豚鼠离焦型近视眼的发生发展中发挥一定的作用。     

兔孔源性视网膜脱离的多焦视网膜电图及超微结构改变

目的研究视网膜脱离后多焦视网膜电图和视网膜超微结构改变。方法对9只18眼健康有色素家兔,制造孔源性视网膜脱离模型,造模前及造模后检测多焦视网膜电图,并于透射电镜下观察视网膜超微结构改变。结果视网膜脱离后10 d,与造模前比较有色素家兔多焦视网膜电图的P1波振幅密度降低(P=0.013),P1波振幅降低(P=0.01),N1波幅值降低(P=0.053)。光镜下神经上皮层的颗粒层变薄,神经纤维层和内颗粒层可见空泡。透射电镜可见:视网膜色素上皮细胞表面纤毛完全消失,视网膜色素上皮细胞内颗粒减少,粗面内质网、线粒体嵴断裂,外颗粒层细胞排列紊乱,视细胞外段盘膜粗大,盘膜间隙增宽,内外丛状层空泡形成,神经节细胞、细胞器大部分消失,神经节细胞层可见细胞质有嵴性肿胀。结论孔源性视网膜脱离后10 d,视网膜全层即发生病理改变,多焦视网膜电图的P1波振幅密度降低,P1波振幅和N1波振幅降低。     

凋亡诱导因子在视网膜疾病中的研究进展

凋亡诱导因子(apoptosis—inducing factot，AIF)是位于线粒体膜间隙的一种黄素蛋白。在凋亡信号刺激时，AIF分子从线粒体释放到细胞浆，然后转位到细胞核内，引起染色体核周边凝集和DNA呈大片段断裂，从而使细胞发生凋亡的特征性改变。AIF所诱导的细胞凋亡是独立于caspases系统的另一务更原始和更保守的凋亡途径，因而不受caspases抑制剂的抑制。凋亡与许多眼病的发生具有密切的关系，关于AIF在眼病中的作用也有报道。我们就AIF诱导凋亡的机制及其在光感受器细胞、视网膜神经节细胞和视网膜色素上皮细胞凋亡中的作用进行简要回顾。     

近视眼的多焦视网膜电流图改变

目的：了解近视眼视网膜功能的早期改变,方法：83人126眼,矫正视力1．0以上,色觉正常并排除其他眼部疾患,按屈光度不同分为：“正视及低度近视组”30人30眼,“中度近视组”25人40眼,“高度近视组”28人56眼,各组年龄及性别分配,应用VERIS Science 4.0视觉诱发反应图像系统进行检查,分析比较以黄斑为中心6个区及4个象限的波形特征,结果：所有被检眼多焦视网膜电流图（mERG)a,b,c波振幅在黄斑部最大,远离黄斑部各区逐渐减小,随近视屈光度的增加,以内斑为中心6个区b,c波振幅,2－6区的a波振幅及4个象限a,b,c波振幅均逐渐减少（P＜0.05),而潜伏期比较判别没有显著性（P＞0．05）,结论：多焦视网膜电流图能客观地对被检测部位每一局部区域视网膜功能进行分析,我们的结果表明：矫正视力正常,眼底除豹纹状改变以外无其他病理变化的中,高度视眼有明显的视网膜锥细胞功能的下降。     

豚鼠形觉剥夺性近视眼视网膜、脉络膜多巴胺代谢的变化

目的研究形觉剥夺对豚鼠神经视网膜、视网膜色素上皮（retinal pigment epithelium,RPE）／脉络膜复合体多巴胺（dopamine,DA）代谢的影响。方法28日龄豚鼠36只,分为3组：正常对照组、遮盖组、遮盖＋去遮盖组,每组12只。遮盖组用半透明眼罩遮盖豚鼠右眼14d,遮盖＋去遮盖纽在遮盖11d后去遮盖3d。14d后测定角膜曲率半径、眼球屈光度和眼轴长度。处死豚鼠,取眼后极部视网膜、脉络膜组织,用免疫组化染色和Western blotting法检测酪氨酸羟化酶（tyrosine hydroxylase,TH）蛋白在神经视网膜、RPE／脉络膜复合体的表达情况,用高效液相色谱检测神经视网膜、RPE／脉络膜复合体的DA、二羟基苯乙酸（3,4-dihydroxyphenylacetic acid,DOPAC）的含量。结果TH蛋白阳性表达于视网膜神经节细胞和内核层部分细胞,RPE／脉络膜复合体中表达阴性。遮盖14d后,豚鼠遮盖眼眼轴延长,近视形成,神经视网膜TH蛋白表达量和DA、DOPAC含量降低（P〈0．05）。遮盖＋去遮盖纽的遮盖眼近视程度低于遮盖组．其神经视网膜TH蛋白表达量和DA、DOPAC含量升高（P〈O．05）,但仍低于正常对照组（P〈O．05）。各纽豚鼠RPE／脉络膜复合体的DA、DOPAC含量比较,差异无统计学意义（P〉0．05）。结论形觉剥夺能调控豚鼠神经视网膜DA代谢,但不影响RPE／脉络膜复合体的DA代谢。     

Electroacupuncture alleviates ciliary muscle cell apoptosis in lens-induced myopic guinea pigs through inhibiting the mitochondrial signaling pathway

AIM: To investigate the effect of electroacupuncture (EA) on the mitochondria-dependent apoptotic signaling pathway in the ciliary muscle of guinea pigs with negative lens-induced myopia (LIM).METHODS: Guinea pigs were randomly divided into normal control (NC) group, LIM group, LIM+SHAM acupoint (LIM+SHAM) group, and LIM+EA group. Animals in the NC group received no intervention, while those in other three groups were covered with -6.0 diopter (D) lenses on right eyes. Meanwhile, animals in the LIM+EA group received EA at Hegu (LI4) combined with Taiyang (EX-HN5) acupoints, while those in the LIM+SHAM group were treated at sham points. After treatments for 1, 2, and 4wk, morphological changes in ciliary muscles were observed with hematoxylin and eosin (H&E) staining and nick end labeling (TUNEL), and the expression of the mitochondrial apoptotic signaling pathway-related molecules in ciliary muscles was measured by real-time quantitative polymerase chain reaction (qPCR) and Western blot. Additionally, the adenosine triphosphate (ATP) contents were also determined in ciliary muscles.RESULTS: Axial length increased significantly in the LIM and LIM+SHAM groups and decreased in the LIM+EA group. The ciliary muscle fibers were broken and destroyed in both LIM and LIM+SHAM groups, whereas those in the LIM+EA group improved significantly. TUNEL assay showed the number of apoptotic cells increased in the LIM and LIM+SHAM groups, whereas reduced in the LIM+EA group. ATP contents showed a significant decrease in the LIM and LIM+SHAM groups, whereas increased after EA treatment. Compared with the NC group, the dynamin-related protein 1 (DRP1), Caspase3, and apoptotic protease activator 1 (APAF1) levels were significantly increased in the LIM group and decreased in the LIM+EA group.CONCLUSION: The results provide evidence of EA inhibiting the development of myopia by regulating the mitochondrial apoptotic signaling pathway.     

豚鼠实验性近视诱导方法及形成过程

近视,尤其是高度近视,是当今全球眼病危害的重要原因之一,多年来研究人员建立了多种动物模型、进行了各种动物实验以探究近视发生发展的机制.豚鼠是近年来最常采用的一种近视模型动物,其在各方面都具有明显的优点,是有价值继续应用于各种近视实验并进行深入研究的实验动物.本文就豚鼠近视模型诱导方法及形成过程作一综述.     

Adenosine receptor protein changes in guinea pigs with form deprivation myopia

Acta Ophthalmol. 2010: 88: 759–765

Abstract.

Purpose: Recent results have shown that treatment with the non‐selective adenosine antagonist 7‐methylxanthine (7‐MX) reduces the development of form deprivation myopia (FDM) in guinea pigs. The aims of this study were to identify the presence of adenosine receptors (AdoRs) in the eye wall of the guinea pig and to determine their possible changes during form deprivation. Methods: Three‐week‐old guinea pigs were monocularly treated with a translucent lens to induce FDM. After 21 days, samples were taken from the posterior eye wall and examined with immunofluorescence confocal microscopy for the presence of AdoRA1, AdoRA2A, AdoRA2B and AdoRA3 proteins. Western blot analysis was used to quantitate AdoRs in samples from the retina, choroids and sclera. Results: All four subtypes of AdoR were expressed in the posterior wall of the guinea pig eye, although AdoRA3 only weakly. Twenty‐one days after the induction of myopia, we observed a significant decrease in protein expression for AdoRA1 (? 25.5%) and an increase in protein expression for AdoRA2B (+ 66.7%) in the retina of FDM eyes. Conclusions: AdoRs of all subtypes are expressed in the retina, choroids and sclera in guinea pigs and may play a role in the regulation of eye growth. The changed pattern of AdoR expression during form deprivation confirms that pharmaceutical intervention targeting AdoRs may reduce myopia progression.     

Comparison of form-deprived myopia and lens-induced myopia in guinea pigs

AIM: To study the efficacy difference between form-deprived myopia (FDM) and lens-induced myopia (LIM), the degree of myopia, axial length and pathological changes of the posterior sclera from guinea pigs were evaluated.METHODS: Four-week pigmented guinea pigs were randomly assigned into 3 groups, including normal control (n=6), FDM group with monocular cover (n=11) and LIM group with monocular -7D lens treatment (n=11). FDM group was form-deprived while LIM group was lens-induced for 14 d. Refractive error and axial length were measured prior to and post treatment, respectively. Morphological changes of sclera were examined using both light and electronic microscopes.RESULTS: After 14d treatment, refractive errors for FDM group and LIM group were -3.05±0.71D and -2.12±1.29D, respectively, which were significantly more myopic than that of normal controls and fellow control eyes (P<0.01). As for axial length, it was 7.93±0.03 mm for FDM group and 7.89±0.06 mm for LIM group, which were significantly longer than both normal and fellow controls (P<0.01). With respect to both refractory error and axial length, the differences between FDM group and LIM group were not significant (P>0.05). Under light microscope, both FDM group and LIM group showed thinned sclera, disarrangement of fibrosis and enlarged disassociation between fibers. Consistently, ultrastructural examination showed degenerated fibroblasts and thinned fibers in posterior sclera.CONCLUSION:Following two weeks of myopia induction in guinea pigs, with regard to the degree of myopia, axial length and pathological alterations, there was no significant difference between FDM and LIM models. Therefore, FDM and LIM are equally effective and useful as a model of experimental myopia and guinea pigs are ideal animals for induction of experimental myopia because their high sensitivity to both form-deprivation and lens-induction.     

抗血管内皮生长因子玻璃体内注射对形觉剥夺性近视豚鼠视网膜中多巴胺水平的影响

目的 探讨抗血管内皮生长因子融合蛋白康柏西普(Conbercept)玻璃体内注射对形觉剥夺性近视(FDM)豚鼠视网膜中多巴胺(DA)水平的影响.方法 选取3周龄三色豚鼠60只,按照随机数字表法分为空白对照组、FDM组、FDM+生理盐水组、FDM+Conbercept组,每组15只.空白对照组豚鼠双眼不作任何处理,其余3...     

Axial myopia induced by a monocularly-deprived facemask in guinea pigs: A non-invasive and effective model

This study evaluated the efficacy of a facemask, a non-invasive and potentially more reliable method, in inducing axial myopia in guinea pigs. Thirty-six animals were randomly assigned to 3 groups: MDF (monocularly-deprived facemask, n=6), lid-suture (eyelids sutured monocularly, n=24) and normal control (free of form deprivation, n=6). All the groups underwent biometric measurement (refraction, corneal curvature and axial length) prior to the experiment. All animals in the MDF group underwent biometric measurement at each of the 4 timepoints (2, 4, 6 and 8 weeks of form deprivation). In the lid-sutured group, the animals were randomly assigned to 4 subgroups (n=6 each) and each subgroup underwent biometric measurement at one of the timepoints matching those of the MDF group. In the normal control group, all animals underwent biometric measurement at each of the timepoints matching those of the 2 experimental groups. Placement of a facemask on an animal took approximately 10 sec and all the facemasks remained in place at all timepoints. The procedure of lid-suture took at least 20 min for an animal and rupture of the sutures occurred in 50% of the animals after 4 weeks. The MDF eyes developed myopia from −2.21±2.11D (Mean±s.d.) at 2 weeks to −4.38±2.14 at 8 weeks (p<0.05 at all timepoints, compared to the contralateral eyes) with a lengthening of the vitreous chamber from 0.17±0.05 mm at 2 weeks to 0.29±0.12 mm at 8 weeks (p<0.01 at all timepoints, compared to the contralateral eyes). The lid-sutured eyes developed myopia from −2.38±1.21D at 2 weeks to −4.75±1.39D at 8 weeks (p<0.05 at all timepoints, compared to the contralateral eyes) with a lengthening of the vitreous chamber from 0.13±0.02 mm at 2 weeks to 0.30±0.10 mm at 8 weeks (p<0.05 at 2, 4, 8 weeks, but >0.05 at 6 weeks, compared to the contralateral eyes) and an increase in the radius of the corneal curvature (0.20±0.07 mm at 4 weeks, p<0.01; 0.17±0.05 mm at 8 weeks, p<0.05; compared to the contralateral eyes). Both the MDF and lid-sutured groups had a similar development in myopia and vitreous length (MDF vs lid-suturing: p>0.05 at all timepoints, one-way ANOVA with Bonferroni correction). This development was significantly faster than in the normal control group (MDF or lid-suture vs normal control: p<0.05 to <0.01 from 2 to 8 weeks, one-way ANOVA with Bonferroni correction). The radius of corneal curvature in the lid-sutured group was significantly greater than in either the MDF group or the normal control group since 4 weeks of form deprivation (p<0.05, one-way ANOVA with Bonferroni correction). Treatment with MDFs is as effective as the lid-suture in inducing axial myopia in guinea pigs. This method is non-invasive and allows evaluation of the same group of animals at different timepoints so that the number of animals required could be minimized without affecting the accuracy of the results.     

电针对透镜诱导性近视豚鼠闪光视网膜电图的影响

目的　探讨电针对透镜诱导性近视豚鼠闪光视网膜电图（ｅｌｅｃｔｒｏｒｅｔｉｎｏｇｒａｍ,ＥＲＧ）的影响。方法　２４只３周龄健康三色短毛豚鼠随机分为透镜诱导组（１２只）与透镜诱导＋电针组（１２只）。两组豚鼠右眼戴－１０Ｄ透镜,左眼不戴镜作为自身对照。透镜诱导＋电针组在戴镜的同时,电针刺激豚鼠两侧合谷穴与太阳穴。４周后测量２组屈光度、眼轴长度及ＥＲＧ波形的变化。结果　４周后,与自身对照眼比较,透镜诱导眼近视屈光度增加（Ｐ＜０．０１）,眼轴延长（Ｐ＜０．０１）;同时其暗适应振荡电位的ＯＳ２波振幅及总振幅下降（均为Ｐ＜０．０１）,暗适应最大混合反应、明适应视锥细胞反应的ｂ波振幅下降（均为Ｐ＜０.０１）。电针干预后,透镜诱导眼的屈光度和眼轴长度没有变化（Ｐ＞０．０５）;但与透镜诱导组右眼相比,透镜诱导＋电针组透镜诱导眼暗适应振荡电位的ＯＳ２波振幅及总振幅,暗适应最大混合反应、明适应视锥细胞反应的ｂ波振幅均增高（均为Ｐ＜０．０５）,达到与其自身对照眼相似的水平（均为Ｐ＞０．０５）。结论　电针刺激合谷穴与太阳穴影响透镜诱导性近视豚鼠ＥＲＧ,可使其恢复至正常水平。     

透镜诱导条件下混合性近视和真性近视豚鼠屈光度和眼轴长度变化

目的 探讨-6.0 D透镜诱导条件下混合性近视和真性近视豚鼠屈光度和眼轴长度变化.方法 选取2周龄睫状肌麻痹前和麻痹后屈光度均在1.00～3.00 D之间的健康英国三色短毛豚鼠20只.将20只豚鼠适应性饲养3 d后,右眼配戴-6.0 D透镜,进行近视模型构建.依据透镜诱导2周后豚鼠睫状肌麻痹前后屈光度差值≥0.5 D且...     

肾阳虚体质对负透镜诱导豚鼠眼球生物参数及后极部巩膜厚度的影响

目的 探讨肾阳虚体质对负透镜诱导豚鼠的屈光度、眼轴长度及后极部巩膜厚度的影响.方法 选取24只3周龄雄性健康三色短毛豚鼠,随机分为正常对照组、透镜诱导组和肾阳虚+透镜诱导组,每组各8只.肾阳虚+透镜诱导组每日腹腔注射氢化可的松注射液,剂量10 mg·kg-1,正常对照组和透镜诱导组则注射等量生理盐水,每日1次,连续2周.第3周起,透镜诱导组、肾阳虚+透镜诱导组右眼均戴-10.00 D透镜,左眼作为自身对照眼,正常对照组则不作任何处理,透镜诱导2周后各组进行屈光度、眼轴长度及后极部巩膜厚度的测量.结果 透镜诱导组自身对照眼屈光度、眼轴长度和后极部巩膜厚度分别为(1.52±0.45)D、(8.52±0.04) mm、(291.25±18.08) μm,与之相比透镜诱导组造模眼近视屈光度增加为(-2.16±0.09)D,眼轴延长为(8.61±0.03)mm,后极部巩膜厚度降低为(233.75±23.26) μm(均为P＜0.01);肾阳虚+透镜诱导组自身对照眼屈光度、眼轴长度和后极部巩膜厚度分别为(1.56±0.18)D、(8.53±0.09) mm、(296.25±22.64)岬,与之相比肾阳虚+透镜诱导组造模眼近视屈光度增加为(-2.73±0.55)D,眼轴延长为(8.70±0.10)mm,后极部巩膜厚度降低为(180.00±16.04) μm(均为P＜0.01);与透镜诱导组造模眼相比,肾阳虚+透镜诱导组造模眼近视屈光度增加更多,眼轴延长更显著,后极部巩膜厚度降低更明显(均为P＜0.05).结论 在负透镜诱导下,肾阳虚豚鼠较正常豚鼠眼轴延长和近视度增加更加显著,肾阳虚体质与近视的发生发展可能有密切联系.