Why is cataract surgery so difficult?

After cataract surgery, the eye may

be blurred due to

inflammation or edema caused by surgery

. This condition usually decreases gradually within a few days to weeks after surgery.

2. Corneal Irregularities During

cataract surgery, the cornea may be cut or manipulated to a certain extent, resulting in irregular or uneven refraction of light on the cornea, resulting in blurred vision.

3. Residual refractive error The

intraocular lens implanted in cataract surgery may not completely correct the patient's refractive power, or there is a slight change in the axial length of the eye after surgery, resulting in incomplete vision.