Cataract surgery (an operation to remove the eye's clouded natural lens and replace it) is done as an outpatient procedure, meaning you very likely go home the same day rather than staying overnight, and it is performed by an ophthalmologist (National Library of Medicine (MedlinePlus)). The operation itself lasts less than half an hour, and recovery takes about 2 weeks, with a follow-up exam usually scheduled for the next day (National Library of Medicine (MedlinePlus)).
What follows is the general shape of the experience in US practice. Exact drop schedules, fasting rules and activity limits differ by surgeon, by facility and by your other medical conditions, so treat every timeframe here as a starting point for questions, not as your instructions.
Why This Procedure Is Done
A cataract is a clouding of the clear lens inside the eye that blocks light from reaching the back of the eye (National Library of Medicine (MedlinePlus), 2025-11-25). It is common with age: by age 80, more than half of all Americans either have a cataract or have had cataract surgery (National Library of Medicine (MedlinePlus), 2025-11-25).
The symptoms that most often bring people to this conversation are blurry or cloudy vision, faded colors, glare and halos around lights, trouble seeing at night, and frequent changes in a glasses or contact lens prescription (National Library of Medicine (MedlinePlus), 2025-11-25). Risk is increased by diabetes, a family history of cataracts, prior eye injury or eye surgery, taking steroid medicines, smoking, heavy alcohol use, or a lot of time in the sun (National Library of Medicine (MedlinePlus), 2025-11-25) — which is why your surgeon will ask about those conditions before scheduling.
Surgery is not usually the first step. At first, vision from an early cataract may be improved with new glasses and brighter lighting, and your eye doctor may recommend a change in eyeglass prescription, better lighting, magnifying lenses or sunglasses (National Library of Medicine (MedlinePlus)). Surgery becomes an option when the cataract gets in the way of everyday activities such as reading, driving or watching TV (National Library of Medicine (MedlinePlus)). Where that line sits is a judgment call between you and your ophthalmologist, and it differs by what your days demand — night driving for work is a different threshold than reading large print at home.
How to Prepare
Attend the measurement visit, usually days to weeks before surgery. The doctor uses ultrasound or a laser scanning device to measure the eye and help determine the best intraocular lens (IOL, the artificial lens implant), and may prescribe eyedrops to use before the surgery (National Library of Medicine (MedlinePlus)).
Ask, at that visit, exactly which day and hour any pre-surgery eyedrops start. Drop timing is physician-directed; write down the start date rather than relying on memory.
Expect a fasting rule for the day of surgery. On the day of surgery, the ophthalmologist may ask you not to eat any solid food for at least 6 hours before the surgery (American Academy of Ophthalmology). Confirm your own number, including what to do about liquids.
Arrange a driver at least 1 day before. You will need someone to drive you home after the procedure (National Library of Medicine (MedlinePlus)).
Bring a written list of all your medicines to the pre-op visit, and ask at least 7 days ahead whether anything you take — blood thinners, diabetes medicines, prostate medicines, steroid drops or pills — needs a change in timing before surgery. Yes or no, get the answer from the prescriber, not from a pharmacy leaflet.
Ask yes/no questions about the morning itself: may I wear contact lenses, eye makeup, lotion or deodorant? May I take my usual morning pills with a sip of water? Who calls me with my arrival time, and when?
Check coverage before the date. The American Academy of Ophthalmology notes that cataract surgery costs are generally covered by Medicare if you are Medicare eligible and your vision tests at a certain level of acuity, and that private plans may have similar vision requirements. Confirm your own benefits and out-of-pocket amounts with your insurer and the surgical facility — do not assume.
Confirm every one of the above with your own surgeon's office. Prep protocols vary by facility, by physician and by your other medical conditions, and the instruction sheet they hand you overrides anything general you read, including this page.
What Happens During the Procedure
Arrival and check-in. You come to an outpatient surgery center or hospital eye unit, not an inpatient ward; cataract surgery is an outpatient procedure, meaning you likely do not have to stay overnight (National Library of Medicine (MedlinePlus)).
Pre-op area. Staff confirm your identity and which eye is being operated on, and give dilating eyedrops so the pupil opens wide.
Numbing and relaxing medicine. Adults are usually awake for cataract surgery. Numbing medicine (local anesthesia) is given using eyedrops or a shot to block pain, along with medicine to help you relax (National Library of Medicine (MedlinePlus)). Children usually receive general anesthesia instead (National Library of Medicine (MedlinePlus)). If you have had a bad reaction to sedation before, say so before the drops start.
Removing the cataract. In phacoemulsification (ultrasound-assisted cataract removal), the doctor uses a tool that produces sound waves to break the cataract into small pieces, which are then suctioned out through a very small incision (National Library of Medicine (MedlinePlus)). You are awake but the eye is numb; you may be aware of bright light and movement.
Placing the lens. After the cataract is removed, an artificial intraocular lens (IOL) is usually placed into the eye to restore focusing power (National Library of Medicine (MedlinePlus)).
Duration. The surgery lasts less than half an hour, and most times just one eye is done (National Library of Medicine (MedlinePlus)).
Recovery area. After the incisions and lens removal, you rest in a recovery area for about 15 to 30 minutes before being ready to go home (American Academy of Ophthalmology).
Before you leave. You may receive a patch to wear over the eye until the follow-up exam, plus eyedrops to prevent infection, treat inflammation and help healing — and your driver takes you home (National Library of Medicine (MedlinePlus)). Dosing and timing of all drops are physician-directed.
Recovery and Aftercare
The timeline
Recovery from cataract surgery takes about 2 weeks, and a follow-up exam with the doctor is usually scheduled for the next day (National Library of Medicine (MedlinePlus)).
If you wear a patch, it stays on until that follow-up exam unless your surgeon says otherwise (National Library of Medicine (MedlinePlus)).
If you have cataracts in both eyes, the doctor may suggest waiting at least 1 to 2 weeks between each surgery (National Library of Medicine (MedlinePlus)).
Drops to prevent infection, treat inflammation and help healing usually continue for a set period after surgery; follow the written schedule you were given (National Library of Medicine (MedlinePlus)).
Routine and expected in the first days
Vision that is hazy at first and clears gradually over the recovery period.
Mild scratchy or gritty sensation, watering, and sensitivity to bright light.
Mild discomfort that your surgeon says is manageable with an over-the-counter pain reliever such as acetaminophen (Tylenol) — whether you may take it, and how much, is physician-directed and depends on your other conditions and medicines.
Not expected — contact the ophthalmology office
Pain that is not relieved by over-the-counter medicine (American Academy of Ophthalmology).
Vision that gets worse instead of better, or blurring that appears after an initial improvement.
Increasing redness, swelling or discharge from the eye.
Weeks, months or years later: cloudy or blurry vision from posterior capsular opacification (PCO), which can be treated with a laser procedure called a posterior capsulotomy (YAG laser capsulotomy) (American Academy of Ophthalmology). This is a known later development, not a sign the surgery failed — but it needs an exam, not waiting.
Activity rules — lifting, bending, showering, swimming, when you may drive again — vary by surgeon. Ask for yours in writing before you leave the facility, and follow that sheet.
Risks and When to Call Your Doctor
Risks the American Academy of Ophthalmology lists for cataract surgery
Eye infection
Bleeding in the eye
Ongoing swelling, including swelling of the retina
Detached retina
Damage to other parts of the eye
Pain not relieved by over-the-counter medicine
Blurred vision
Dislocation of the IOL
How likely any of these are for you depends on your age, your other eye conditions, whether you have diabetes, and the complexity of your particular cataract. Ask your surgeon to put your own risk in plain words during the consent conversation; be skeptical of any single universal percentage you see quoted online.
Routine and expected after surgery: gradually clearing haze, mild grittiness, watering, light sensitivity, and mild discomfort in the first days.
Call your ophthalmologist immediately
Bursts of floaters, flashes of light like a camera going off, or a shadow or curtain in your side vision — call your ophthalmologist immediately (American Academy of Ophthalmology).
Pain not relieved by over-the-counter medicine, worsening redness, or discharge.
Go to the emergency room or call 911
Sudden loss of vision in the operated eye, or severe eye pain with nausea and vomiting, especially if you cannot reach your ophthalmologist's office.
Trouble breathing, swelling of the face or lips, chest pain or fainting after sedation or any new medicine.
Keep the after-hours number from your surgical facility somewhere you can find it at 2 a.m., and confirm with your own care team which symptoms they want to hear about first — call thresholds differ between practices.
Frequently asked questions
Will I be asleep, and will I see what's happening?
Adults are usually awake for cataract surgery, with numbing medicine (local anesthesia) given as eyedrops or a shot, plus medicine to help you relax (National Library of Medicine (MedlinePlus)). The eye is numb, and most people are aware of bright light and some movement rather than detail. Children usually receive general anesthesia instead (National Library of Medicine (MedlinePlus)). If you are anxious about being awake, say so at the pre-op visit so the team can plan.
Can both eyes be done on the same day?
Most times just one eye is done at a sitting, and if you have cataracts in both eyes your doctor may suggest waiting at least 1 to 2 weeks between each surgery (National Library of Medicine (MedlinePlus)). That gap lets the first eye be checked before the second is scheduled. Ask your surgeon what interval they use and why, since practice varies.
When can I drive again?
You will need someone to drive you home on the day of surgery (National Library of Medicine (MedlinePlus)). After that, clearance to drive comes from your ophthalmologist, usually at or after the follow-up exam scheduled for the next day (National Library of Medicine (MedlinePlus)), and it also depends on your state's vision standard for a license. Ask directly at the follow-up rather than guessing from how your vision feels.
My vision went cloudy again a year later — did the cataract grow back?
Vision can become cloudy or blurry weeks, months or years after cataract surgery because of posterior capsular opacification (PCO), the clouding of the capsule left in place to hold the lens implant (American Academy of Ophthalmology). It can be treated with a laser procedure called a posterior capsulotomy, also known as YAG laser capsulotomy (American Academy of Ophthalmology). Book an eye exam so the cause can be identified rather than assuming it is PCO.
Will insurance pay for this?
The American Academy of Ophthalmology notes that cataract surgery costs are generally covered by Medicare if you are Medicare eligible and your vision tests at a certain level of acuity, and that private plans may have similar vision requirements. That is a general statement, not a guarantee for your plan, and premium lens options are often handled differently. Confirm benefits, prior-authorization rules and your out-of-pocket amount with your insurer and the surgical facility before the date.
Hanna writes about the quieter corners of mental health: boredom, loneliness, the ordinary weight of being tired. She approaches the subject with patience, resisting easy resolutions in favor of honest complication.
