许多皮质性白内障是渗透性白内障(osmotic cataract)。虽然起因不同,但它们具有共同的特点:即晶体纤维有明显的水化现象,此乃因钠和氯离子流入,钾离子排出晶体所致;其结果使晶体内渗透压增加,继而细胞膜破坏,从而加速白内障病程的进展。实验糖性白内障是典型的渗透性白内障,其他如实验性微波、辐射、萘、低血糖及低血钙所致的白内障,甚至某些人的皮质性白内障也属于这个范畴。 Many cortical cataracts are osmotic cataract. Although they have different causes, they have the common feature that crystal fibers have obvious hydration phenomenon, which is caused by the influx of sodium and chloride ions and potassium ions to be discharged from the crystals. As a result, the intraosseous osmotic pressure is increased and then the cell membrane is destroyed, Thereby accelerating the progression of cataract disease. Experimental sugar cataract is a typical osmotic cataract, other such as experimental microwave, radiation, naphthalene, hypoglycemia and hypocalcemia cataracts, and even some people with cortical cataracts also fall into this category.