Clinical Observation of the Method of Matching the Lens of Fog forJuvenile Possessing Nearsightedness

Objective To observe the accuracy and the practicability of the low-degree matching fog lens in myopia.Methods Ninety-one eases(182 eyes,46 males and 45 females)of juvenile myopia in the ophthalmology and optometry clinic were included in this study.Aged 8-18 years old,the average was(12.82 ±0.51)years old.The diopter was between-0.50D and-4.00D,the average was(-2.24±0.15)D,and the average uncorrected visual acuity was(0.41±0.03).First,the patients wear the lenses of 1.00D～2.00D lower than the actual diopter according to the computer optometry examination.Second,cheek the eyesight after of wearing the glasses 30 minutes.Last,for those whose eyesight was less than 1.0,appropriately increase the number of concave lens,adjust the degree of astigmatism and astigmatic visual axis to make their eyesight up to 1.0,then record the correctional degree.On the same day,for those who have worn the lenses through the method of matching the fog lens for nearsightedness,use the mydriatie eye drop,named of Victoria-P made in US,dropping once every five minutes,total to six times.After the last eye dropping,computer optometry was performed again 40 minutes later,and then visual acuity was corrected to 1.0 by interpolation.Results.The average diopter was(-2.18±0.14)D before mydriasis by the Victoria-P,the average diopter was(-1.94±0.14)D after mydriasis.There was remarkably significant difference using t test(t-6.982;P＜0.001).2.The average degree of matching the lens by mydriasis with the Vietoria-P is(-1.69±0.131)D,the average degree of matching the lens for nearsightedness fog was(-1.694±0.14)D.There was not remarkably significant difference using t test(t-0.453;P ＞0.05).Conclusions There is not remarkably significant for equivalent sphere-lens-value between the method of matching the fog lens for nearsightedness and the method of matching the lens after mydriasis with the Victoria-P.There is no sex and age difference using the two methods.The method of matching the fog lens for juvenile possessing nearsightedness is a scientific,accurate,practical and convenient method of optometry and matching the lens.For young people more than eight-year-old who was suspected of myopia,use the method of matching the fog lens can replace the method of matching the lens for rapid mydriasis with the Victoda-P. Key words: Myopia; Fog as optician; Mydriasis