Eyes Adjust The Relative Power Ratio Of Positive And Negative Changes And Myopia Study On The Relationship Between The Incidence

ObjectiveChoose the same age group, different equivalent refractive measurement of University Students group positive and negative regulation of relative angle and implicit, such as adjusting parameters, analysis of its relationship with the occurrence of myopia development, as well as analysis of eye-conditioning inherent connection between the parameters Department.MethodsInformed consent in the case of China Medical University 94 choices of new freshmen enrolled 292 people, age range: 17-year-old to 21 years old (average age 18.76 years). Computer based on the refraction, the use of a comprehensive sleep Optometry machine Principal optometry, strict compliance with the standard system optometry procedures; all subjects (in ametropia after refractive correction) measured in the integrated Optometry machine its amplitude, positive and negative adjust the relative power to regulate the amount of lag, well, almost implicit gradient;±2.00D butterfly final with a mirror measuring flexibility conditioning. According to the refractive state of the subjects divided into five groups, group face up to 29 low to moderate myopia group 118, group of 82 moderate myopia, high myopia group of 37 anisometropic group 26; which Anisometropia not included in the study group; eyes adjust to the different groups of parameters were statistically analyzed.Result First, adjusting the rangeAbsolute right to face up to regulate power group mean (7.15±2.76) D, low, medium and high myopia groups regulating the absolute right of the mean force (5.05±2.05) D, (5.27±2.13) D, (5.16±2.06) D ; face up to his left eye group mean absolute power adjustment (7.38±2.66) D, low, medium and high myopia group left eye, respectively, the mean absolute power for the regulation of (5.03±1.79) D, (5.52±2.32) D, (5.28±2.15) D; address the group and between myopia group amplitude differences were significant; and between different myopia compared 22 There was no significant difference; about other eye was no significant difference between.Two, the positive relative adjustment (PRA)Focus group is to face up to adjust the relative average power (4.87±1.47) D, low, medium and high myopia group is the mean relative power of regulation (2.36±1.21) D, (2.92±1.40) D, (2.86±1.81) D; and address the group, the different PRA myopia group were significantly lower, the difference was statistically significant; myopia group comparison between the 22 PRA, resulting in low to moderate myopia myopia group and differences between groups, P<0.05; and high myopia group and the low, moderate myopia was no significant difference between groups, P> 0.05.Third, the negative regulation of relative (NRA)Focus group to address the negative regulation of relative average force (2.09±0.46) D, low, medium and high myopia group of negative regulation of relative strength of the mean (1.99±0.51) D, (1.95±0.45) D, (1.99±0.47) D; and address the group, slightly different from NRA to lower myopia group, but the difference was not statistically significant.Four, PRA/ NRA ratioFocus group to face up to PRA/NRA mean ratio (2.35±0.51), low, medium and high myopia group of PRA/NRA were the ratio of the mean (1.21±0.66), (1.53±0.76), (1.49±0.95); and to face up to group, short-sighted group of different PRA/NRA ratio were significantly lower, the difference was statistically significant; myopia between PRA/NRA compare the ratio of 22, resulting in low to moderate myopia myopia group and between group differences, P<0.05; and high myopia group and the low, moderate myopia was no significant difference between groups, P> 0.05.Friday, regulation lagsFocus group to face up to the mean adjustment lag (-0.65±1.09) D, low, medium and high myopia groups, respectively mean adjustment lag (-0.48±0.93) D, (-0.75±1.00) D, (-0.50±0.86) D; and address the group, the different regulation of short-sighted group lagged slightly changed, but the difference was not statistically significant.Six, well past the level of implicit oblique (DLP, NLP)Focus group to face up to far past the level of the average implicit oblique (0.56±2.36)▲A and (3.13±4.88)▲, different diopter of myopia group and address the group close to the mean, there was no significant difference; but low to moderate myopia high myopia group and between group differences in statistical NLP.Seven, adjustment flexibilityFocus group to address the flexibility of adjusting the average (12.68±4.36) cpm, slightly higher than the diopter of myopia in different groups, but no difference between the statistical significance.Conclusion1. Myopia of the PRA/NRA ratio was significantly lower than stigmatism, myopia is the relative adjustment of the apparent decline in reserves caused by insufficient regulation of hyperopia and myopia defocus are probably initiated the formation of one of the factors.2. Stigmatism with myopia of negative regulation of relative power to regulate the lag, the level of implicit distance strabismus, AC/A ratio and adjusting the parameters regulating the sensitivity of the difference was not statistically significant, and the incidence of myopia was no significant correlation.