Observation On The Influence Of Two Optical Correction Methods On Children's Myopia

Objective:To observe and compare the curative effect of bioptical prism and mono-optical frame glasses in children's myopia correction.This paper discusses the influence of bioptical prism on the regulation factors of children's myopia and analyzes the role of bioptical prism in the prevention and control of children's myopia.Methods: The cases in this study originated from 80 cases of myopia children who met the inclusion criteria from December 2017 to December2019 to our ophthalmology clinic.The age of the first diagnosis is 7-14 years old.After fully informed of the pros and cons of the two methods of correcting myopia and the parents of the child fully informed consent and independently choose the corrective method,the selected children will be divided into 2 groups according to different correction methods.For each of the 40 cases,the pair of spectacles with double-light prism frames was the research group and the group of single-light spectacles was the control group.Check and observe the visual acuity,eye axis,diopter,adjustment response,adjustment sensitivity,adjustment amplitude,positive and negative relative adjustment before and after wearing myopia children who meet the inclusion criteria and after wearing different frames of glasses for 3 months,6 months,and 12 months The changes of various parameters before and after treatment in the two groups.If it is found that the progression of myopia is greater than0.50 D during the follow-up,lenses should be replaced.The study used prospective non-randomized clinical controlled trials.Results: 1.Comparison of refractive changes between the two correction methods: the comparison between the study group and the control group at baseline,3 months and 6 months of dioptric power,the difference was not statistically significant(P>0.05);Diopter increase-0.38 ± 0.28 D,control group increase-0.83 ± 0.16 D,the difference was statistically significant(P<0.05).2.Comparison of eye axis changes between the two correction methods: there was no significant difference in the change in the length of the eye axis between the study group and the control group at baseline,3 months,and 6 months after wearing(P>0.05);1 year later,the eye axis of the study group The increase was 0.23±0.03 mm,and the eye axis of the control group was increased by 0.39±0.06 mm,with a significant difference(P<0.05).3.The study group and the control group wore 3 months,6 months,and 12 months of follow-up adjustment hysteresis.The differences were statistically significant(P>0.05);there was an interaction between the adjustment hysteresis and time,(F=13.373,P<0.05);the two correction methods change with time,the adjustment lag of the research group shows a downward trend,the adjustment lag of the control group does not change significantly,and the adjustment lag of the research group is lower than that of the control.4.Comparison of the adjustment sensitivity between the two correction methods:there was no statistically significant difference between the baseline adjustment sensitivity value of the study group and the control group and the adjustment sensitivity value at 3 months after treatment(P>0.05),and the difference in adjustment sensitivity at the 6-month and 12-month follow-up Statistically significant(P<0.05);using repeated measures analysis of variance,the adjustment sensitivity has an interactive effect on the correction method and time(F=4.226,P<0.05);the adjustment sensitivity of the experimental group has always shown an upward trend,while the control group has increased to At 3 months,it began to decline,and the adjustmentsensitivity of the experimental group was always higher than that of the control group after treatment.5.Comparison of the adjustment range between the two correction methods: there is no statistically significant difference between the baseline adjustment range of the experimental group and the control group and the adjustment range after 3 months of treatment(P> 0.05);Statistical significance,(P<0.05);There is an interaction between correction method and time(F=36.13,P <0.05),the adjustment range of the experimental group has been showing an upward trend,and the control group began to decline when it rose to 3 months,and treatment The adjustment range of the experimental group has been higher than that of the control group.6.Comparison of the positive and relative adjustments of the two correction methods: there was no statistically significant difference in the positive and relative adjustments between the study group and the control group at baseline and at 3 months(P>0.05);The difference of the positive and relative adjustments was statistically significant(P<0.05).For the effect of positive relative adjustment,there is an interaction between the two correction methods and time(F=14.415,P<0.05).Two pairs of different methods found that the comparison of positive relative adjustment between the 6 months and1 year of the study group was not statistically significant.The other time points of wearing glasses were statistically significant(P<0.05).Compared with the control group,the absolute value of the positive relative adjustment over time in the study group tended to be larger,and there was no significant difference in the positive relative adjustment over time in the control group(F=3.423,P>0.05).7.Comparison of negative relative adjustments between the two correction methods: comparison of negative relative adjustment values at baseline,3 months,6 months,and 1 year before enrollment between the control group and the study group,the difference was not statistically significant(P>0.05);The interaction of correction methods and time had nostatistical significance on the negative relative adjustment value(F=3.24,P>0.05),and the main effect of the correction method on negative relative adjustment was not statistically significant(F=0.24,P>0.05)The main effect of time on negative relative adjustment was not statistically significant(F=0.28,P>0.05).Conclusion:1.Double-optical prism can effectively control the development of myopia children's diopter and eye axis,and has a certain delay effect on the progress of children's myopia.2.Both the double prism and the single light frame glasses can reduce the adjustment lag of myopia children,improve the adjustment sensitivity,adjustment range,and positive and negative adjustment,but the effect of the double light prism on the adjustment function is significantly better than the single light frame glasses It may be one of the mechanisms that the dual-light prism more effectively controls the progression of myopia than the single-light frame lens.