RLE vs. Cataract Surgery: What's the Difference?

The short answer

RLE is also called clear lens exchange, clear lens extraction, refractive lens replacement and lens replacement surgery.

Not sure which one applies to you? Book a complimentary consultation, and we'll connect you with our partner practice closest to you for a complimentary evaluation and consult.

RLE vs. cataract surgery at a glance

What's the same: the surgery itself

If you watched both operations side by side, you couldn't tell them apart. Each is an outpatient procedure that averages less than 10 minutes per eye:

1. Numbing drops are placed in the eye, and a mild sedative helps you relax. You stay awake and comfortable.
2. The surgeon makes a tiny opening at the edge of the cornea, sometimes with a laser.
3. The natural lens is broken up with ultrasound (phacoemulsification) and gently removed.
4. A folded artificial lens is placed inside the thin capsule that held your natural lens, where it unfolds.
5. The opening seals on its own, usually without stitches.

Recovery is the same too. Most people return to normal routines within a day or two and use prescription eye drops for a few weeks. Most of the time, both eyes are treated on the same day.

Both procedures also draw from the same menu of lens implants. A cataract patient can choose the same premium multifocal or toric lens as an RLE patient, and the lens performs the same way in either eye. See how RLE works, step by step.

What's different: the reason, the timing and who pays

The reason. Cataract surgery treats a disease. The lens has clouded, and no pair of glasses can fully fix the blur, glare or faded colors. RLE treats a focusing problem. The lens is still clear, but it no longer focuses the way you want, so you depend on readers, bifocals or a strong prescription.

The timing. RLE is done proactively, often in your 50s and 60s, before a cataract forms. Cataract surgery is done reactively, once the cataract interferes with driving, reading or work.

The expectations. A cataract patient is often thrilled simply to see clearly again, even if they still need some glasses. An RLE patient is choosing surgery on a healthy eye specifically to need glasses less. That's why RLE planning tends to involve more detailed measurements, more lens counseling and more premium lens choices.

Who pays. RLE is elective, so you pay the full fee yourself. If your exam finds a cataract, the practice provides the codes and exam results you need to ask your insurer about partial reimbursement.

The gray zone: early lens changes

Your natural lens ages in stages. In your 40s it stiffens and loses its ability to focus up close, which causes presbyopia. Later, its proteins begin to clump and cloud, which becomes a cataract. Many people seeking RLE are somewhere in between, with early clouding that doesn't yet qualify as a cataract for insurance purposes. Whether your surgery is classified as RLE or cataract surgery depends on how much the clouding affects your vision and whether it meets your plan's coverage criteria. Only a dilated eye exam can answer that.

Who is a candidate for each?

RLE may be a good fit if you:

• Are around 50 or older and reach for readers several times a day
• Are very farsighted or highly nearsighted
• Were told you're not a good LASIK candidate because of a high prescription or thin corneas (compare RLE, LASIK and ICL)
• Have early lens changes that are likely to become a cataract
• Want a one-time solution that won't change as you age

RLE may not be the best choice if you:

• Are under about 40 and still focus well up close; LASIK or an implantable lens (ICL) usually makes more sense (see how they compare)
• Are very nearsighted and have retinal risk factors, such as a prior retinal tear or detachment in either eye
• Have active eye disease, such as uncontrolled glaucoma or macular disease
• Expect perfect vision at every distance with no glasses, ever

Cataract surgery is usually recommended when:

• Your vision is blurry, dim or yellowed, and an updated prescription doesn't fix it
• Glare and halos make night driving difficult
• Your glasses prescription keeps changing
• The cataract makes reading, driving or work harder than you can comfortably manage

What refractive lens exchange costs

RLE typically costs $2,500 to $8,000+ per eye in the U.S. Because it's elective, you pay the full fee, and the lens you choose affects the price more than anything else.

HSA and FSA funds generally qualify, and most practices offer monthly financing.

If your exam finds a cataract

RLE is priced as an elective procedure. If your consultation exam shows you already have a cataract, the practice gives you the diagnosis and procedure codes along with your exam results. You can submit them to your insurance company to see whether it will reimburse a portion of the cost. Whether it does depends on your plan.

A fair comparison also counts what you'd spend on glasses and contacts over the years. Our cost breakdown estimates 25 years of glasses and contacts against a one-time RLE fee. Your consultation should include a written, all-in quote per eye, so ask what it covers: measurements, the lens, follow-up visits and any enhancements.

Risks: mostly the same, with two worth understanding

Both procedures share the same uncommon risks, including infection, inflammation, swelling, raised eye pressure, glare or halos with some lenses, and retinal detachment. The difference is the trade-off. With cataract surgery, you accept those risks to treat vision you've already lost. With RLE, you accept them on an otherwise healthy eye, so the bar for candidacy is higher.

Retinal detachment in very nearsighted eyes

Very nearsighted eyes are longer than average and already carry a higher natural risk of retinal detachment. Lens surgery can add to that risk, especially in younger patients. Older studies of RLE in highly nearsighted eyes reported detachment rates as high as about 8%, while a 15-year follow-up study of 437 eyes found a 0.69% rate of retinal complications overall. If you're very nearsighted, ask for a thorough dilated retina exam before surgery. After any eye surgery, sudden new floaters, flashes of light or a shadow across your vision need same-day care.

Hazy vision months or years later (PCO)

After either procedure, the thin capsule holding your new lens can gradually turn hazy. This is called posterior capsule opacification, or PCO, and it's sometimes nicknamed a "secondary cataract." It isn't a cataract returning. A quick, painless in-office laser treatment (YAG capsulotomy) clears it in minutes.

Frequently asked questions

Is refractive lens exchange the same as cataract surgery?

The surgery is the same: the natural lens is removed and replaced with an artificial lens. The difference is the reason. Cataract surgery removes a cloudy lens to restore vision, while RLE replaces a clear lens to correct your prescription and reduce your need for glasses.

Is clear lens exchange the same as RLE?

Yes. Clear lens exchange, clear lens extraction, refractive lens replacement and lens replacement surgery are all names for the same procedure.

Does insurance cover refractive lens exchange?

Usually not. RLE is elective vision correction, so it's typically self-pay. HSA and FSA funds generally qualify, and most practices offer monthly financing.

How much does refractive lens exchange cost?

RLE typically costs $2,500 to $8,000+ per eye in the U.S. A standard monofocal lens runs about $2,500 to $4,000 per eye, and premium lenses about $4,000 to $8,000 or more. HSA and FSA funds generally qualify, and most practices offer financing.

Can a cataract come back after RLE or cataract surgery?

No. A cataract forms only in the natural lens, and that lens is gone. Months or years later, the capsule behind the new lens can turn hazy (PCO), which a quick in-office laser treatment clears.

Will insurance help if I have a cataract?

It may. RLE is priced as an elective procedure, but if your exam shows a cataract, the practice gives you the diagnosis codes and exam results. You can submit them to your insurance company, which may reimburse a portion of the cost depending on your plan.

Can I have RLE if I've had LASIK?

Often, yes. Prior LASIK makes lens power calculations more complex, so bring your old LASIK records if you have them. Some lenses, such as the Light Adjustable Lens, can be fine-tuned after surgery.

About our medical reviewers

Andrew Kopstein, MD is certified by the American Board of Ophthalmology and has performed more than 60,000 lens-based procedures. His surgical practice is devoted entirely to lens-based vision correction, including refractive lens exchange, and he was the first surgeon to complete more than 3,000 Light Adjustable Lens implants. He earned his medical degree at the University of Minnesota and is a member of the American Academy of Ophthalmology and the American Society of Cataract and Refractive Surgery.

Joseph King, MD is certified by the American Board of Ophthalmology and has performed more than 250,000 vision correction procedures, including LASIK, refractive lens exchange and cataract surgery. He earned his medical degree at the University of British Columbia, served as chief resident during his ophthalmology residency at Case Western Reserve University and St. Luke's Medical Center, and completed a fellowship in laser vision correction at the University of South Florida Eye Institute. He has served as a clinical investigator on numerous research projects and as chief surgeon of LASIK MD centers in Vancouver and Calgary. In 2010 he became the first surgeon in the world to perform LASIK on a new custom wavefront platform, and he has had LASIK himself.

Dr. Kopstein and Dr. King are surgeons at K2 Vision, a participating practice in our patient-matching network.

Sources

• AAO EyeWiki: Clear Lens Extraction
• AAO EyeNet: The refractive lens exchange debate
• Stonecipher K, et al. Refractive lensectomy outcomes and complications for myopia and hyperopia: a 15-year retrospective study. Medical Research Archives, 2015
• Colin J, Robinet A, Cochener B. Retinal detachment after clear lens extraction for high myopia: seven-year follow-up. Ophthalmology. 1999;106(12):2281–2285.
• RefractiveLensExchange.com: What RLE costs