The blurring of double vision can be caused by eyestrain with sodium vitrate eye drops, cataract can be caused by pinoxin eye drops, and refractive error eye drops are generally not useful. Blurred vision can be caused by eyestrain, and eye drops that can be used include sodium vitrate eye drops and digitalis glycosides eye drops. Cataracts can also be caused by blurred eye shadows, and can be controlled with lens protein protectants such as pinoxin eye drops and phacolysin eye drops. If the blurring is caused by refractive errors such as astigmatism, eye drops are usually ineffective and refractive correction such as glasses is needed. If the phenomenon of blurred vision is serious, go to the hospital for examination, and follow the doctor’s instructions when using the above eye drops.