一般情况下,人到40岁以后,眼内起调节作用的晶状体与睫状肌逐渐老化,功能减退,致使眼睛看近物,尤其是阅读发生困难,这种近点远移的现象称为老视,俗称老花眼。解决老花眼阅读的办法只有配镜。过去农民的眼镜较少,随着科学文化知识的普及,农民配眼镜的也随之增多。但笔者发现农民戴的花镜多数是从眼镜摊里“自选”来的。这种眼镜虽然价格便宜些,但镜片质量很差,屈光度不准,瞳孔距离不符,致使花镜不能久戴,极 Under normal circumstances, the person to the age of 40, the eye play a role in the regulation of the lens and the ciliary muscle gradually aging, dysfunction, causing the eyes to see near objects, especially reading difficulties, this phenomenon of moving away from the point known as the old Depending on, commonly known as presbyopia. Presbyopia to solve the reading method only glasses. In the past peasants less glasses, with the popularity of scientific and cultural knowledge, peasants with glasses also will increase. However, I found that the majority of farmers wear reading glasses from the spectacle booth “optional” to. Although the price of such glasses cheaper, but the poor quality of the lens, refraction are not allowed, the pupil distance does not match, resulting in reading glasses can not be worn for a long time