What're the risks of having a cataract operation done?

Low: Cataract surgery is highly perfected and the risks are low. But it is possible to have altered eyeglass need, infection, bleeding, intraocular lens slippage, fibrosis of the lens capsule, dislocation of the lens, corneal opacification and retinal detachment. Other things can happen also but all of these are very uncommon with current techniques.

Risk: Even though every surgical procedure involves some degree of risk, cataract surgery is considered one of the most predictable, effective, and safest procedures in medicine today. Every year, over 3 million cataract surgeries are performed in the United States alone, with a 98% success rate involving no complications. Their could be: inflammation, or retinal detachment, etc.

Risks!: The success is greater than 98-99++% and usually all goes well. But the risks are bleeding, swelling of the retina, retinal detachment, corneal swelling / scarring, slippage of the lens, wrong lens power, infection, blindness, the need for a second surgery, etc.