A YAG laser capsulotomy is a quick, painless procedure sometimes needed after cataract surgery to restore clear vision. Over time, a natural membrane behind the artificial lens can become cloudy—this is common and not a complication or failure of your original surgery. The YAG laser gently creates a small opening in this membrane, allowing light to pass through clearly again. Most patients notice an improvement in their vision within a day, and no incisions or recovery time are needed.