Prediction analysis of ametropia in children aged from 5 to 13 years old / 重庆医学

ABSTRACT

Objective To investigate the characteristics of children ametropia in the development process ,predict and analyze the refractive state with the measurement data of refractive factors on the children aged from 5 to 13 years old .Methods 461 children (922 eyes) ,aged from 5 to 13 years old ,were selected from outpatients who went to ophthalmology clinic from January 2011 to September 2012 .The static diopter was measured by the optometry with the continuous mydriasis of 5 days using the ophthalmic gel of 1% atropine .And the biological measured values of refractive factors were obtained by the A type ultrasonic and keratome-ter .Meanwhile ,the parameters including the height (H) ,weight and the dominant eye were recorded to analyze the characteristics of children ametropia in the development process ,and then the equation between the diopter and the correlative factors including the measurement data of refractive factors and growth factors was established by the stepwise multiple regression analysis .Results (1) The myopia degree of the right eye static diopter was significantly deeper than the left (P0 .05) .In the group in which the right eye was dominant ,the difference of the left eye and right eye refractive factors was not statistically significant (P>0 .05) except the instance in which K1 of the right eye was bigger than the left eye(P<0 .05) .(2) In the period of 5 to 13 years old ,the myopia developing trend of girls was earlier than boys .(3) The ocular axis length(AL) and H development had a close relationship ,and the correlation equation of them was AL =16 .135+0 .052H(r=0 .993) .(4) The multiple linear regression equation for the relationship between the static diopter (D) ,ocular AL and mean value of the corneal curvature (K) was D=84 .271-0 .937K -1 .878AL(r=0 .871) .Conclusion The ocular AL and H development of children have a close relationship .The static diopter(D) of the children aged from 5 to 13 years old can be predicted by the ocular axis length(AL) and corneal curvature(K) , w hich can be used to prevent myopia reasonably .