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闭角型青光眼与一些眼部特征如浅前房、轴性远视、晶体厚度增加和小角膜有关。在正常眼及闭角型青光眼患者,房角变窄是不断变化的、持续进行的过程,主要继发于晶体增大。这种动态关系可看成是晶体大小的改变与眼球容积的直接关系,并可进一步规定为晶体厚度与眼轴长度比。若晶体厚度增加或眼轴长度变短,则虹膜前移造成房角变窄。晶体厚度与眼轴长度之比乘以10即为一指数,其值>1,称此为晶体厚度/眼轴长度系数。本文以晶体厚度/眼轴长度系数对眼前节的动态改变作定量研究,以便对闭角型青光眼的评价标准化。作者以A型超声扫描作生物统计学测量,测出眼轴长度、前房深度,晶体厚度。连续测3次并以其平均值作最后数据。以Lowe报道的正常
Angle-closure glaucoma with some eye features such as shallow anterior chamber, axial hyperopia, increased crystal thickness and the cornea. In patients with normal-angle and angle-closure glaucoma, narrowing of the angle of the angle is an ever-changing, ongoing process that is mainly secondary to an increase in crystals. This dynamic relationship can be seen as a direct change in crystal size and eyeball volume and can be further specified as the ratio of crystal thickness to axial length. If the crystal thickness increases or the axial length becomes shorter, the iris is caused to move forward to narrow the angle of view. The ratio of crystal thickness to axial length multiplied by 10 is an index with a value> 1, which is called the crystal thickness / axial length factor. In this paper, the dynamic changes of the anterior segment were quantitatively studied using the crystal thickness / axial length factor in order to standardize the evaluation of angle-closure glaucoma. The authors used a type A ultrasound scan for biometric measurements to determine axial length, anterior chamber depth, and crystal thickness. Measure continuously for 3 times and take the average value as the final data. Lowe reported normal