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睁大、正视、眯起眼睛时,由于屈光程度不同,所测得视力结果是不同的。为掌握正确的视力检查方法,使检查结果接近实际,检测真实的患病率,有利于近视的防治工作,于1988年3月,特做如下调查。 1 对象及方法 1.1 对象:选择南岗区海城小学校的60名学生和9中学校50名学生。男生53名,女生57名。 1.2 方法采用“E”字标准对数视力表,用5分记录法,受检者与灯光视力箱距离5米,眼与视力表5.0行等高,视力箱的上下照度均匀一致不耀眼,检查时,被测者的眼睛解除疲劳。如能认清5.0视标,则为视力正常,如认清在5.0行以下,则为视力不良。 1.3 三种检查方法正视:要求不眯眼,不歪头,不睁大眼睛,不斜眼,立正,两眼正视前方。睁大:要求同正视,只是眼裂略大于正视。
Eyes wide open, face, narrow eyes, due to different refractive degrees, the measured visual acuity results are different. In order to grasp the correct visual acuity test methods, the test results close to the actual test to detect the true prevalence is conducive to the prevention and treatment of myopia, in March 1988, made the following special investigation. 1 Subjects and methods 1.1 Object: Select Nangang Haicheng primary school 60 students and 9 middle school 50 students. 53 boys and 57 girls. 1.2 Methods “E” standard logarithmic visual acuity chart, with 5 minutes recording method, the subjects and the visual acuity box distance of 5 meters, eye and eye chart 5.0 line contour, visual acuity uniform illumination from top to bottom is not dazzling, check When the test subject’s eyes relieve fatigue. If we can recognize 5.0 as standard, then normal vision, such as recognizing that the line below 5.0, then poor eyesight. 1.3 three kinds of inspection methods Front: Requirements not squinting, not tilted his head, not wide-eyed, not squint, stand up, eyes straight ahead. Open: demanding the same attention, but slightly more eyed face.