The Clinical Study Of Callan Pseudomyopia

ObjectiveTO observe a series of clinical signs, inclding the pseudomyopia sufferer' s visual acuity, clinical myopia diopter, the actual refraction count, the accomodative spasm diopter, oculi axes length, the positive relative accommodation(5m), disease course, the age distribution scope, the correlation between the visual acuity decrease degree and the accommodative spasm diopter, and to discuss the clinical characters of pseudomyopia.Methodsthe author collected the myopia 121 cases , including the pseudomyopia 61 cases 124 eyes, real myopia 60 cases 120 eyes .The subjects were assigned into two groups, namely real myopia group and pseudomyopia group. The author observed the pseudomyopia sufferer' s visual acuity, clinical myopia diopters, the actual refraction counts, the accomodative spasm diopters, oculi axes length, the positive relative accommodation(5m), disease course, the age distribution scope; the correlation between the visual acuity decrease degree and the accommodative spasm diopters, and contrasted the positive relative accommodation(5m) between real myopia group and pseudomyopia group.Statistical Analysis: t Test was used to determine the difference between the clinical myopic diopter and actual myopic diopter, linear relativity was analyzed between the decreased visual acuity and the accommodative spasm diopter. T' Test was used to determine the difference of the positive relative accommodation between real myopia group and pseudomyopia group.Results1 .Pseudomyopic sufferer's age ranged from 5 to 16 years ( average age 8.87 years).2. The disease course of pseudomyopia wasl month—4 years, and the average disease course was 14 months.3."Visual acuity scope of pseudomyopia was 0.4 — 1.0. There were 112 eyes(91.8%) visual acuity during 0.5-0.8.4.Clinical myopic diopters distribution of pseudomyopia was -0.25 D—2.00D (average-0.88D) .5.Actual refraction counts scope of pseudomyopia was 0D-+2.00D (average+0.93D) , The deference between pseudomyopic sufferer's clinical myopia diopters and actual refraction counts was significient. 92 eye's (75.4%) accommodative spasm diopters were less than 3.00D.6. There was positive correlation between the decreased distant vision degree of pseudomyopia and the accommodative spasm diopters(R=0.5, P<0.05).7.The oculi axes of pseudomyopia was 22.00mm—23.10mm, average 22.57mm08.The positive relative accommodation (5m) of pseudomyopia was-0.75D— -1.25D.Conclusionl.The decreased distant visual acuity of pseudomyopia with the accommodative spasm diopters was reported positive correlation. The more visual acuity decreased, the more accommodative spasm diopters increased.2.The positive relative accommodation of the patient with pseudomyopia is less than -1.25D.3.TO people who is suspected as a pseudomyopia suffer, we must check and diagnose under the situation of cycloplegia .We should consider the possibility of pseudomyopia if the sufferer' s disease course is within 4 years,...