在大多数西方国家中,糖尿病是青壮年的主要致盲原因,而且还发现糖尿病成年人中低度近视的发生率较高,虽然 Danish 报道糖尿病儿童的近视发生率未见增加,但到25～34岁时,这种并发症则变得更加明显,所以作者选择易出现视力损害的这个年龄组,调查视力损害和屈光不正的分布情况, Diabetes mellitus is a major cause of blindness in young adults in most western countries and it is also found that there is a high prevalence of low myopia in adults with diabetes. Although Danish reports no increase in the incidence of myopia in children with diabetes, At age 34, the complication became more pronounced, so the authors chose the age group that was prone to visual impairment to investigate the distribution of visual impairment and refractive errors,