近视人群视觉质量的相关研究

发布时间：2018-07-04 16:07

本文选题：对比敏感度 + 高阶像差　；参考：《重庆医科大学》2016年硕士论文

【摘要】：目的:本研究选择近视人群中最佳矫正视力达1.0及以上的样本,通过不同视力间屈光度、眼轴、眼压、角膜中央厚度、像差的比较,各光照条件下的对比敏感度、像差的比较,以及相同视力像差与对比敏感度的比较,探讨视力、像差与视觉质量之间的相关联系。方法:(1)回顾分析术前常规检查的近视患者的临床资料,通过采集最佳矫正视力、综合验光仪屈光度、非接触眼压、眼轴长度、角膜厚度、角膜像差、全眼像差、对比敏感度,研究不同视力组各指标的差异。(2)利用对比敏感度及其计算的对比敏感度函数曲线下面积和各光照条件下的全眼像差的数据,比较不同光照条件下对比敏感度、像差的差异。(3)在相同矫正视力的基础上,以对比敏感度均数分组,研究对比敏感度不同其全眼各像差的差异;以全眼各像差均数分组,了解像差不同其对比敏感度是否不同;多元逐步回归方法了解不同光照条件下低、中、高各频率的对比敏感度以及AULCSF与全眼各像差的关系。结果:1.BCVA1.0组与BCVA1.2组间的等效球镜度数、眼轴、非接触眼压、角膜中央厚度之间结果无统计学意义。总像差、总高阶像差、慧差、三叶草、球差、z33、z-33、z-13、z13作为指标,4mm瞳孔直径下的角膜各像差bcva1.0组与bcva1.2组间差异均无统计学意义,4mm瞳孔直径下的全眼像差1.2视力组z-33大于1.0视力组z-33,两组间差异有统计学意义,其余各像差的比较结果之间差异均无统计学意义。bcva1.0组与bcva1.2组明光条件下的aulcsf值分别为1.26±0.11、1.32±0.10,其差异具有统计学意义;bcva1.0组与bcva1.2组暗光条件下的aulcsf值分别为1.26±0.12、1.30±0.12,其差异具有统计学意义,眩光条件下的aulcsf差异无统计学意义。2.不同光照条件下全眼总像差、总高阶像差、慧差、三叶草差、ssph、z33、z-33、z13、z-13比较,眩光条件下总像差、总高阶像差、慧差、三叶草差均比明光条件下小,差异有统计学意义,两组间ssph、z33、z-33、z13、z-13比较差异均无统计学意义。暗光条件下各像差均较明光条件、眩光条件下的各像差大,两组间比较差异有统计学意义。不同光照条件下对比敏感度3c/d、6c/d、12c/d、18c/d、aulcsf比较,在3c/d的频率下,暗光条件下对比敏感度较明光条件下好,两组比较差异有统计学意义,6c/d、12c/d、18c/d、aulcsf比较差异均无统计学意义。明光条件下3c/d、6c/d、12c/d、aulcsf对比敏感度均比眩光条件下的好,两组间比较差异有统计学意义,18c/d频率比较差异无统计学意义。暗光条件下3c/d、6c/d、12c/d、aulcsf对比敏感度均比眩光条件下的好,两组间比较差异有统计学意义,18c/d频率比较差异无统计学意义。3.分析矫正视力1.2组对比敏感度不同其像差的差异,明光条件下对比敏感度较好组其对应的总像差、等效球镜相对偏低;暗光条件下aulcsf较好组其全眼总高阶像差相应较小;bcva1.2组三种光照条件下对比敏感度偏低组其球差较大。分析矫正视力1.0组对比敏感度不同其像差的差异,明光条件下,对比敏感度较好组其对应的总高阶像差、三叶草差相对偏低;暗光条件下对比敏感度偏低组其球差较大。4.分析近视眼的像差不同时其对比敏感度的差异。矫正视力1.2组,总像差越大,其对明光条件下比敏感度越差。暗光条件和眩光条件下,球差越大,暗光条件和眩光条件下的对比敏感度越差。矫正视力1.0组,总高阶像差、慧差、三叶草差越大,其明光条件下对比敏感度越差。球差偏低时,明光、暗光条件对比敏感度优于球差偏高的对比敏感度。5.对不同光照情况的不同频率对比敏感度与各像差进行分析,发现各光照条件各频率中总像差、球差对视觉质量起负性相关的作用,垂直慧差对视觉质量起正性相关的作用。结论:1.在近视人群中,bcva1.0组与bcva1.2组间其等效球镜、眼轴长、非接触眼压、角膜中央厚度无差异。bcva1.0组与bcva1.2组间比较全眼大部分像差、角膜各像差均无差异。bcva1.2组明光条件下、暗光条件下对比敏感度优于bcva1.0组。2.比较不同光照条件下全眼像差的差异,显示暗光下瞳孔直径较大,其全眼各像差均大于明光条件和暗眩光条件下的像差。比较三种不同光照条件下的对比敏感度差异,直射眩光可能导致人眼的视力下降,使患者在光源照射下有视物模糊的症状,人眼视觉质量因眩光照射而下降。3.本研究从对比敏感度不同以及像差不同两方面来分析,发现大部分对比敏感度偏高组其像差均相对较小,或者像差偏高组其对比敏感度相对较差,提示我们,在相同的视力基础上,像差较高可能会影响患者的视觉质量,这其中球差对视觉质量的影响较为明显。对不同光照情况的不同频率对比敏感度与各像差进行分析,发现各光照条件各频率中总像差、球差对视觉质量起负性相关的作用,垂直慧差对视觉质量起正性相关的作用。
[Abstract]:Objective: to select the best corrected visual acuity of 1 or more in the myopia population, the comparison of the refractive index, ocular axis, intraocular pressure, central corneal thickness, aberration, contrast sensitivity, comparison of aberrations, and the comparison of the same visual aberration and contrast sensitivity were used to explore the visual, aberration and visual quality of the myopia. Methods: (1) retrospective analysis of the clinical data of myopia patients with preoperative routine examination. By collecting the best corrected visual acuity, the refractive index of the optometre, non contact intraocular pressure, ocular axis length, corneal thickness, corneal aberration, total eye aberration, contrast sensitivity, and the difference of the different visual acuity groups were studied. (2) use contrast sensitivity And compared the total eye aberrations under the contrast sensitivity function curve under the contrast sensitivity function curve and the different illumination conditions, and compare the difference of the contrast sensitivity and aberration under different illumination conditions. (3) on the basis of the same corrected visual acuity, the difference of the contrast sensitivity in the whole eye is compared with the contrast sensitivity, and the aberrations in the whole eye are compared with the whole eye aberrations. The correlation sensitivity of low, middle and high frequencies under different light conditions and the relationship between AULCSF and the aberrations of the whole eye were investigated by multiple stepwise regression. Results: the number of equivalent spherical mirrors, eye axis, non contact intraocular pressure and central corneal thickness between group 1.BCVA1.0 and BCVA1.2 group. There was no statistical significance. Total aberration, total high order aberration, coma, Trifolium, spherical aberration, Z33, z-33, z-13, Z13 as indexes, there was no statistical difference between the bcva1.0 and bcva1.2 groups of the corneal aberrations under the pupil diameter of 4mm, and z-33 in the total ocular aberration 1.2 Vision Group under the pupil diameter of 4mm was greater than that of the 1 Vision Group z-33. The difference between the two groups was statistically significant. The differences of the results of the other aberrations were not statistically significant in the.Bcva1.0 group and the bcva1.2 group, the aulcsf value was 1.26 + 0.11,1.32 + 0.10, respectively, and the difference was statistically significant. The aulcsf value under the dark light condition of bcva1.0 group and bcva1.2 group was 1.26 + 0.12,1.30 + 0.12 respectively, and the difference was statistically significant. There was no significant difference between aulcsf and.2. under different light conditions. The total aberration of the whole eye under different light conditions, the total high order aberration, the difference of the wisdom, the difference of clover, the SSPH, Z33, z-33, Z13, z-13, the total aberration, the total higher order aberration, the difference of the wisdom and the difference were statistically significant, the difference was statistically significant. The difference between the two groups was SSPH, Z33, z-33, Z13. The z-13 was the difference. There was no statistical significance. The aberrations of all the two groups under the condition of dark light were larger than those under the condition of glare. The difference between the two groups was statistically significant. The contrast sensitivity under different light conditions was compared with the contrast sensitivity of 6c/d, 12c/d, 18c/d and aulcsf. Under the 3c/d frequency, the contrast sensitivity was better under the light condition, and the difference between the two groups was more different. There was no statistically significant difference between 6c/d, 12c/d, 18c/d and aulcsf. The contrast sensitivity of 3c/d, 6c/d, 12c/d and aulcsf under the light condition was better than that under the glare condition. The difference between the two groups was statistically significant, and the frequency of 18c/d was not statistically significant. The contrast sensitivity of 3c/d, 6c/d, 12c/d, were all compared to the glare under the dark light condition. The difference between the two groups was statistically significant, the difference between the two groups was statistically significant, and there was no statistically significant difference between the 1.2 groups of corrected visual acuity and the difference in the difference of the aberrations between the 1.2 groups of corrected visual acuity, and the corresponding total aberrations in the better contrast sensitivity group under the light condition, and the relative low value of the equivalent sphere in the dark light condition, and the better total eye total height of aulcsf under the dark light condition. The order aberration was smaller, and the difference of the spherical aberration of the group bcva1.2 under the three light conditions was higher than that of the low contrast sensitivity group. The difference of the aberrations between the 1 groups of corrected visual acuity was different. Under the condition of bright light, the contrast sensitivity was better than the total high order aberration, and the difference of the three leaves was relatively low; under the dark light condition, the difference in the contrast sensitivity was lower. The greater.4. analysis of the aberrations of myopia was not at the same time difference in contrast sensitivity. The 1.2 groups of corrected visual acuity, the greater the total aberration, the worse the specific sensitivity under the light conditions. Under the condition of dark light and glare, the greater the spherical aberration, the worse the contrast sensitivity under the dark conditions and the glare conditions. The 1 groups of orthodontic vision, the total higher order aberration, the difference of wisdom and the difference of clover The greater the contrast sensitivity under the light conditions, the lower the spherical aberration, the light, the contrast sensitivity of the dark light condition is superior to the contrast sensitivity.5. of the spherical aberration, and the contrast sensitivity and the aberrations of different light conditions are analyzed, and the total aberrations in each frequency are found, and the spherical aberration is negatively related to the visual quality. Conclusion: 1. in the group of myopia, 1. in group bcva1.0 and bcva1.2, the equivalent sphere lens, eye axis length, non contact intraocular pressure, and no difference in central corneal thickness between group.Bcva1.0 and bcva1.2 group are compared with that of group bcva1.2, and there is no difference between the corneal aberrations in the.Bcva1.2 group and the dark light strip. The contrast sensitivity is better than that of the bcva1.0 group.2., and the difference in the total eye aberration under different light conditions shows that the pupil diameter is larger under the dark light, and the aberrations in the whole eye are larger than those of the clear light conditions and the dark glare conditions. The contrast sensitivity of the three different illumination conditions is compared, and the direct glare may lead to the decrease of the eye vision. The visual quality of the patients is blurred by the light source, and the visual quality of the human eye drops.3. because of the glare. This study is analyzed from two aspects of different contrast sensitivity and aberration. It is found that most of the higher contrast sensitivity groups have relatively small aberrations, or the contrast sensitivity of the higher aberration groups is relatively poor, suggesting that we are in the lower contrast. On the basis of the same visual acuity, the higher aberration may affect the visual quality of the patient, in which the effect of the spherical aberration on the visual quality is more obvious. The sensitivity of the different frequency contrast and the aberrations of different light conditions are analyzed, and the total aberrations in each frequency are found, and the spherical aberration is negatively related to the visual quality. The effect of error on visual quality is positive.
【学位授予单位】：重庆医科大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：R778.11

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