眼的调节主要是通过睫状肌收缩 /松弛 晶状体悬韧带松弛 /收缩 晶状体变凸 /平过程完成的。有理论认为 ,随着年龄的增长 ,由于晶状体赤道部与睫状肌间的距离缩短 ,同时睫状肌的作用减弱 ,而使调节力下降 ,出现老视。因此 ,理论上 ,通过巩膜扩张术 ,即在角巩膜缘后的巩膜层间植 Eye regulation is accomplished primarily through the ciliary muscle contraction / relaxation of the lens suspensory ligament relaxation / contractions of the lens bulge / flat process. Some theories suggest that with age, due to the shortening of the distance between the equator and the ciliary muscle, while the role of the ciliary muscle weakened, leaving the regulatory power decreased, presbyopia. Therefore, theoretically, scleral expansion, that is, in the scleral limbus after the interspinous plant