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How Long Does Lens Replacement Surgery Take?

Lens replacement surgery typically takes 15 to 30 minutes per eye, depending on the procedure, the patient's eye condition, and the complexity of the operation. Cataract surgery generally takes 10 to 20 minutes, while refractive lens exchange, which replaces the eye's natural lens to correct vision rather than remove a cataract, takes approximately 15 to 30 minutes. During the procedure, the surgeon makes a small incision, removes the natural lens, and inserts an artificial intraocular lens (IOL), typically without requiring stitches. Although the operation itself is relatively short, patients should plan to spend around 2 to 3 hours at the surgical facility for preparation, anesthesia, postoperative monitoring, and discharge instructions. Lens replacement surgery is generally performed as an outpatient procedure, with patients monitored for approximately 15 to 30 minutes afterward before returning home with someone to drive them.

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How Long Does Lens Replacement Surgery Take?

Lens replacement surgery typically takes 15 to 30 minutes per eye, depending on the procedure, the patient's eye condition, and the complexity of the operation. Cataract surgery generally takes 10 to 20 minutes, while refractive lens exchange, which replaces the eye's natural lens to correct vision rather than remove a cataract, takes approximately 15 to 30 minutes. During the procedure, the surgeon makes a small incision, removes the natural lens, and inserts an artificial intraocular lens (IOL), typically without requiring stitches. Although the operation itself is relatively short, patients should plan to spend around 2 to 3 hours at the surgical facility for preparation, anesthesia, postoperative monitoring, and discharge instructions. Lens replacement surgery is generally performed as an outpatient procedure, with patients monitored for approximately 15 to 30 minutes afterward before returning home with someone to drive them.

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Who Is a Good Candidate for Lens Replacement Surgery?

Good candidates for lens replacement surgery include adults with cataracts that interfere with daily activities or significant vision problems that can't be adequately corrected through other treatments. People with cataracts are generally considered for surgery when cloudy vision, glare, or difficulty seeing at night begins to affect activities such as reading and driving, even with prescription glasses or contact lenses. Refractive lens exchange, a separate type of lens replacement surgery, is generally more suitable for adults over 40, particularly those with presbyopia, severe nearsightedness, or farsightedness who want to reduce their dependence on corrective eyewear. Patients should also have sufficiently healthy eyes, since conditions such as advanced retinal disease, corneal disorders, or a higher risk of retinal detachment can make surgery less appropriate. Before recommending surgery, an ophthalmologist evaluates the patient's vision, eye health, medical history, and expected visual outcomes to determine whether the benefits outweigh the risks.

Cataract Surgery vs. Refractive Lens Exchange

Cataract surgery and refractive lens exchange are two types of lens replacement procedures that use nearly identical surgical techniques but serve different purposes. Cataract surgery treats vision loss caused by a cloudy natural lens, while refractive lens exchange replaces a clear natural lens to correct nearsightedness, farsightedness, astigmatism, or age-related focusing problems. Refractive lens exchange is generally considered for adults over 40, particularly those seeking greater independence from glasses or contact lenses, whereas cataract surgery is recommended when lens clouding significantly interferes with daily activities. Both procedures use artificial intraocular lenses (IOLs), including monofocal, multifocal, and extended depth-of-focus designs, with the choice depending on the patient's visual needs and eye health. Although both surgeries can improve vision, refractive lens exchange requires careful consideration since removing a clear natural lens permanently eliminates its remaining focusing ability and carries surgical risks, including retinal detachment, particularly in highly nearsighted patients.

What Activities Should You Avoid After Lens Replacement Surgery?

After lens replacement surgery, patients should avoid activities that put pressure on the eyes or increase the risk of infection while the surgical incision heals. Heavy lifting, running, cycling, and other strenuous exercises are generally restricted for 7 to 10 days, while bending forward with the head below waist level should be avoided during the first 48 hours to prevent increased eye pressure. Swimming in pools, lakes, or oceans should be postponed for at least 2 weeks, and patients should keep soap, shampoo, and direct water spray away from the operated eye during early recovery. Rubbing the eyes, applying eye makeup, and participating in contact sports should also be avoided until the surgeon confirms it's safe, since these activities can irritate the eye or interfere with healing. Driving should only resume once vision has recovered sufficiently and the surgeon has approved it, with individual recovery instructions taking priority over general timelines.

Will You Still Need Glasses or Contact Lenses After Lens Replacement Surgery?

Yes, some patients still need glasses or contact lenses after lens replacement surgery, depending on the type of artificial lens implanted, their remaining prescription, and their visual needs. Monofocal intraocular lenses generally correct vision at one distance, meaning patients who choose clear distance vision will typically need reading glasses for close-up tasks such as reading or using a smartphone. Multifocal and extended depth-of-focus lenses can reduce dependence on corrective eyewear by improving vision across different distances, although they don't eliminate the need for glasses in every case. Approximately 9 out of 10 patients report improved vision after cataract surgery, but better eyesight doesn't necessarily mean achieving 20/20 vision without correction. Once the eyes have healed, generally within 8 weeks, an eye doctor can assess any remaining refractive errors and determine whether prescription glasses or contact lenses are still needed.

Learn More About Lens Replacement Surgery

Is lens replacement surgery painful?

Lens replacement surgery is generally painless since the surgeon uses local anesthesia, typically numbing eye drops, to prevent discomfort during the procedure. Patients can notice lights, shadows, or movement while awake, and mild soreness or irritation can occur for a few days afterward.

Can lens replacement surgery be done on both eyes on the same day?

Yes, surgery on both eyes can be performed on the same day in select cases, although the procedures are commonly scheduled separately to monitor healing and reduce the risk of complications affecting both eyes. When scheduled separately, the interval depends on the patient's recovery, eye health, and surgeon's assessment, with some procedures scheduled as close as two weeks apart.

How long do you need to use eye drops after lens replacement surgery?

Patients commonly use prescribed eye drops for around 4 weeks after surgery to reduce inflammation and prevent infection while the eye heals. The exact medication schedule varies, and patients should follow their surgeon's instructions rather than stopping treatment when their vision begins to improve.

Can you fly after lens replacement surgery?

Air travel is generally safe after uncomplicated lens replacement surgery, since routine cataract procedures don't normally create problems related to cabin pressure. Patients should still obtain clearance from their surgeon, attend scheduled follow-up appointments, and avoid traveling before complications have been ruled out.

References

Cataract Surgery. Johns Hopkins Medicine. https://www.hopkinsmedicine.org/health/treatment-tests-and-therapies/cataract-surgery. Published date not listed. Accessed October 26, 2026.

Cataract Surgery. National Eye Institute. https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/cataracts/cataract-surgery. Published date not listed. Accessed October 26, 2026.

Cataract Surgery. National Health Service. https://www.nhs.uk/tests-and-treatments/cataract-surgery/. Published date not verified. Accessed October 26, 2026.

Cataract Surgery: Recovery and How It Works. Cleveland Clinic. https://my.clevelandclinic.org/health/treatments/21472-cataract-surgery. Published date not verified. Accessed October 26, 2026.

Factors to Consider in Choosing an IOL for Cataract Surgery. American Academy of Ophthalmology. https://aao.org/eye-health/tips-prevention/best-artificial-lens-implant-iol-cataract-surgery. Published March 31, 2025. Accessed October 26, 2026.

Intraocular Lenses (IOL) for Cataract Surgery. American Academy of Ophthalmology. https://aao.org/eye-health/diseases/cataracts-iol-implants. Published June 18, 2026. Accessed October 26, 2026.

Post Operative Cataract Advice. Leeds Teaching Hospitals NHS Trust. https://www.leedsth.nhs.uk/patients/resources/post-operative-cataract-advice-2/. Published date not listed. Accessed October 26, 2026.

Refractive Lens Exchange: How To Prepare for Your Procedure. Cleveland Clinic. https://my.clevelandclinic.org/health/treatments/24840-refractive-lens-exchange. Published March 9, 2023. Accessed October 26, 2026.

Refractive Lens Exchange. Survey of Ophthalmology. https://pubmed.ncbi.nlm.nih.gov/25127929/. Published November, 2014. Accessed October 26, 2026.

What to Expect Before and After Surgery. New York Eye and Ear Infirmary of Mount Sinai. https://www.nyee.edu/care/eye/cataract-laser-vision-correction/what-to-expect. Published date not listed. Accessed October 26, 2026.