人们对老年人的用眼卫生很少重视,这是缺乏一般用眼常识所致。人过了40岁,即开始出现老视,俗称老花眼。出现老花眼后,如不及时配戴眼镜,会使眼睛的调节肌肉疲劳,产生头痛、眼胀、精神不振等。戴上老花镜,就可消除这些不适。 一般,老花眼的程度与年龄成正比例。40岁左右,老花眼50度; People pay little attention to the eye health of the elderly, which is caused by the lack of general common sense. People over the age of 40, which began to appear presbyopia, commonly known as presbyopia. Occur after presbyopia, if not timely wear glasses, the eye will adjust the muscle fatigue, headache, swollen eyes, lack of energy and so on. Wear reading glasses, you can eliminate these discomfort. In general, the degree of presbyopia is proportional to the age. 40 years old, presbyopia 50 degrees;