近視LASIK術(shù)后調(diào)節(jié)與集合功能變化的研究
[Abstract]:Objective to study the changes of regulation and collective function after (laser in stiu keratomileusis, LASIK) in myopic patients with laser in situ keratomileusis (LASIK) and the changes of fatigue symptoms in close range work. The effects of the parameters of adjustment and collective function after LASIK on the fatigue symptoms of working in close range were analyzed. Methods one hundred and forty-six eyes of 73 myopia patients who were treated with LASIK in the excimer laser treatment center of affiliated Hospital of Ningxia Medical University were divided into low group (n = 20), moderate group (n = 26) and height group (n = 27) according to myopic diopter equivalent spherical value. At the same time, 19 cases 38 eyes of emmetropia were collected as control. Before operation, one week, one month and three months after operation, the adjustment amplitude, positive relative regulation and negative relative regulation, adjustment flexibility, aggregation near point and fusion range were measured in the emmetropia group and myopia group. Adjustment set and accommodation ratio (accommodative convergence per unit of accommodation ratio, AC/A) and close working fatigue symptom score were analyzed statistically. Result 1. The adjustment amplitude of myopia group was decreased one week after operation (P0.05), and then increased gradually. At one month after operation, there was no significant difference between before and after operation (P0.05). At 3 months after operation, the adjustment range of myopia group was higher than that of preoperative group (P0.05), which was close to the level of emmetropia group (P0.05). The positive relative regulation of myopia group in one week after operation, one month after operation compared with preoperative, there was no significant difference (P0.05), three months after surgery compared with preoperative (P0.05), compared with the emmetropia group, there was no difference (P0.05). There was no significant difference in negative relative regulation between each stage of myopia group and before operation (P0.05), and there was no significant difference compared with emmetropia group (P0.05). The adjustment flexibility of myopia group was not significantly different from that before operation (P0.05), and there was no significant difference compared with emmetropia group (P0.05). Myopia group at one week after the collection of close points compared with the preoperative distance from the eyes (P0.05), and then gradually closer to the eyes. There was no significant difference between the group and the emmetropia group at 3 months after operation (P0.05). There was no significant difference in the range of fusion between the myopia group and the preoperative group (P0.05), and there was no significant difference compared with the emmetropia group (P0.05). The AC/A of myopia group decreased one week after operation (P0.05), then gradually increased. There was no significant difference between three months after operation (P0.05), close to the level of emmetropia group (P0.05). In myopia group, the scores of close working fatigue symptoms at one week after operation were higher than those before operation (P0.05), and then the scores decreased gradually. There was no significant difference at one month after operation compared with preoperative (P0.05), and the scores of each group were lower than those of pre-operation (P0.05) at the end of three months after operation, and were close to the level of emmetropia group (P0.05). The results showed that there was no significant difference among the three groups (P0.05) in the analysis of variance of the parameters of visual fatigue and regulation of collective function among the three groups of low myopia, moderate myopia and high myopia (P0.05). Correlation analysis showed that the smaller the adjustment amplitude and the positive relative regulation, the worse the adjustment flexibility, the closer the set, the smaller the AC/A value of preoperative wear mirror in LASIK patients. The early postoperative symptoms of periocular fatigue were more obvious (P0.05); at one month after operation, the symptoms of visual fatigue increased and the range of regulation decreased, the aggregation near point increased and the AC/A value decreased (P0.05); the improvement and adjustment range of the symptoms of visual fatigue increased three months after operation. The positive relative regulation was related to the increase (P0.05). Conclusion Excimer laser in situ keratomileusis can improve the collective function of myopia patients and relieve the fatigue symptoms in close range.
【學位授予單位】:寧夏醫(yī)科大學
【學位級別】:碩士
【學位授予年份】:2011
【分類號】:R779.63
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