一只眼睛视力很好,一只却很差。这是什么情况?要怎么保护?
我的眼睛就是这样,不知道怎么解决。
推荐回答(4个)
原因很多,这种视力属于屈光参差。 是很普遍的现象,说到保护就是 戴眼镜,让不好的眼睛与好眼睛一样工作, 防止不好的眼睛进一步发展。
这种视力属于屈光参差...屈光参差的配镜原则
多数学者认为,屈光参差在1.50D以内属生理性。这类屈光参差双眼矫正视力均可达1.0以上。如两眼屈光参差较大,往往度数较高的眼视力特别低。
一般认为两眼屈光度相差0.25D可以产生O.5%的视像差。在一般情况下,病人能耐受的视像差不超过5%,即两眼可相差2.50D~3.00D,如超过这一限度,两眼视网膜像差过于悬殊,就难融合在一起发生立体视觉。但柱镜的视像差要大于球镜,0.25D柱镜可以产生l%的视像差,一般超过1.50D则不易使病人接受。
有人通过研究,认为戴镜后立体视正常者,屈光参差度在3.50D以下者,视像差在2.5%以下;屈光参差度在4.00D~5.00D时,两眼视像差为4%~5%。故屈光参差度在6.00D以下者可以戴矫正眼镜。
凡屈光参差,试戴镜无不适或稍有不适,尚能耐受,应当做充分矫正,并经常戴镜。个别年幼病人,屈光参差6.50D也能接受。12岁以下的儿童和18岁以下的青少年,耐受力较大,两眼作完全矫正而无症状,多为单眼视,屈光度高的眼末使用,如使用则会出现症状。高度屈光参差所产生悬殊视像差,戴一般眼镜是无法融合的,可试配亲水角膜接触镜矫正,散光度数高者当配硬性角膜接触镜。对于屈光参差度较高,而又有两眼立体视存在,可分期矫正,3~6个月换镜1次,当视具体度数结合具体条件,分2~3次逐渐增加至完全矫正。屈光参差远视性者难以接受,近视性者易于接受。
总的原则是:单眼不正,如度数在3.00D以下者,可以完全矫正,超过3.00D者,可给予低度数矫正,超过6.OOD者该眼多为弱视,可试配接触镜;双眼参差在3.()()D以内者,可完全矫正,超过3.00D者,首先矫正度数低的眼,高的眼可予低度数矫正或按度数低的配镜戴;异性参差在3.00D以内者可完全矫正,超过3.。0D者可试配接触镜
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