With the technique of vitrectomy gradually maturing, the problem of vitreous substitutes emerged by degrees, this is an evidence of unbalanced development of technology.

• 随着玻璃体手术技术日趋成熟,玻璃体替代物的问题逐渐显现出来,两者之间的矛盾就是科学技术发展不平衡的表现。