Status And Analysis Of Refractive Deveiopment Of Preschool Children

Purpose:By 6 months to 6 years old preschool children refractive status,eye pupil,pd,carries on the analysis,to explore preschool children refractive development pattern with eye state,analysis of preschool children~'pupil,pd growth rule,to improve the recognition of refractive error effect on preschool children from all walks of life,for the related departments to take effective children eyesight intervention measures to provide scientific basis,control of preschool children prevalence of refractive errors,as well as vision screening for small age children provide a quick,simple and reliable method.Methods:The VS100 model Weilun vision screening device was used to screen the refractive status of 1200 cases(2400 eyes)of children aged 6months-6 years in hengyang City,to detect pupil and pupil distance,eye position during gaze;The parents conducted a questionnaire survey on the birthplace,place of residence,and refractive status of the children,and the children were inspected according to 6 months-1year old,1year old-2 years old,2 years old-3 years old,3 years old-4 years old,4 years old-5 years old,and 5 years old-6 years old,divided into I-VI group,the screening results and the contents of the questionnaire were collected and collected,and the data was analyzed by overall and group statistical analysis.Result:1.The spherical lens of group I is(0.7±0.67 DS),the cylindrical lens is(-0.99±0.73 DC),the spherical equivalence is(0.21±0.60DS);The spherical lens of group II is(0.66±0.67 DS),the cylindrical lens is(-0.78±0.55 DC),the spherical equivalence is(0.28±0.58 DS);The spherical lens of group III is(0.87±0.79 DS),the cylindrical lens is(-0.87±0.63 DC),the spherical equivalence is(0.43±0.73 DS);The spherical lens of group IV is(0.91±0.81 DS),the cylindrical lens is(-1.15±0.95 DC),the spherical equivalence is(0.33±0.78 DS);The spherical lens of group V is(1.01±1.24DS),the cylindrical lens is(-1.25±1.07 DC),the spherical equivalence is(0.38±1.17 DS);The spherical lens of group VI is(1.25±1.55 DS),the cylindrical lens is(-1.36±1.18 DC),the spherical equivalence is(0.58±1.52DS);Preschool children have insufficient hyperopia reserve;the difference between spherical lens,spherical equivalence and gender in each age group is statistically significant,and the male level was lower than that of female;2.With the increase of age,the proportion of abnormal spherical lens,abnormal cylindrical lens,abnormality of spherical lens and cylindrical lens gradually increased;the abnormality of cylindrical lens is dominant in all age groups;The difference between the abnormal rate of spherical lens and the genetic history of parents was statistically significant;3.In the type of refractive error,simple myopia 35 eyes,simple hyperopia 27eyes,simple hyperopic astigmatism 0 eyes,refractory hyperopic astigmatism475 eyes,simple myopic astigmatism 121 eyes,renaturation myopic astigmatism 102 eyes;mixed astigmatism 860 eyes,all ages All of them were mixed astigmatism and refractory hyperopic astigmatism;the differences between different types and gender of ametropia were statistically significant(X2=17.969,P=0.003,P<0.05);4.The abnormal rate of low-degree mixed astigmatism in group I-VI was34.54%and 829 eyes were abnormal.The abnormal rate of moderately mixed astigmatism was 1.29%and 31 eyes were abnormal.The highly mixed astigmatism was 0 eyes.The abnormal rate of low hyperopia was19.04%and 457 eyes were abnormal.The abnormal rate of moderate hyperopia was 1.62%,39 eyes were abnormal.The abnormal rate of hyperopia was 0.25%and 6 eyes were abnormal.The abnormal rate of low myopia was 5.29%and 127 eyes were abnormal.The abnormal rate of moderate myopia was 0.33%and 8 eyes were abnormal.The abnormal rate of high myopia was 0.04%and 1 eye was abnormal.5.All age groups were dominated by anterograde astigmatism;The difference between age and astigmatism axis was statistically significant.6.In anisometropia,group I-II and group IV-V were mainly cylindrical anisometropia;group III was mainly spherical anisometropia;group VI was spherical anisometropia and cylindrical anisometropia.The proportion is the same.7.The X-axis of the right eye gaze of the group I-VI was positive,the X-axis of the left eye gaze was negative,and the Y values of the left and right eye gaze were negative;8.The pupil sizes of group I,group II,group III,group IV,group V,and group VI were(4.81±0.58)mm,(4.96±0.67)mm,(5.28±0.76)mm,and(5.31±0.9)mm,respectively.5.7±0.86)mm,(5.69±0.84)mm;9.The pupil distance in group I was(44.99±2.75)mm,group II was(46.85±2.99)mm,group III was(49.29±3.13)mm,group IV was(50.44±3.64)mm,group V was(50.44±3.64)mm,and group VI was(54.2±3.37)mm.Conclusion:1.Children aged 6 months to 6 years old showed hyperopia,astigmatism showed myopia,and low age children had insufficient hyperopia reserve;2.The ametropia of children aged 0.6-6 years was mainly mixed astigmatism,followed by refractory hyperopic astigmatism;All age groups were dominated by anterograde astigmatism;3.Preschoolers between 6 months and 6 years old show different degrees of inversions,but most of them are in the normal staring state;4.Pupil size and interpupillary distance increase with age;5.Preschool children have a high rate of refractive abnormalities,and preschool vision screening is critical.