Post-Surgery Adjustable Lens for Cataracts
What This Lens Does
This lens is a kind of artificial lens placed in the eye during cataract surgery. The big difference is simple. Its focus power can be changed after it is in your eye. Most cataract lenses lock in their power on the day of surgery. This one stays adjustable for several weeks. After your eye heals, light treatments shape the lens to give you the best vision. Then a final treatment locks the result in place.
The first version of this lens was cleared by the U.S. Food and Drug Administration on November 22, 2017. That made it the first lens of its kind that doctors can shape after the eye has settled. A newer 'plus' version of the lens was added later. It uses the same basic design but adds a small change to the front surface. The change gives you a wider range of clear vision, including the arm's-length range you use for screens.
The lens has light-sensitive molecules built into its material. A special office device shines a precise pattern of ultraviolet light on the lens. The light makes parts of the lens shift shape. That changes how it bends light coming into your eye. Each treatment is short. It takes about 40 to 150 seconds per eye. Most people need three or four treatments spread over one to two weeks.
The treatments do not hurt. Numbing drops go in first. You rest your chin on the device and look at a target light. The doctor controls where the light hits the lens. By doing this, the doctor can correct any leftover near, far, or astigmatism focus. Once you and your doctor agree the vision looks right, two final treatments lock in the shape. After that, the lens does not change again.
The lens reacts to ultraviolet light. That is the whole point. But it cannot tell the difference between the doctor's light and ordinary sunlight. So you wear UV-blocking glasses every waking hour from surgery day until 24 hours after your last lock-in. Most offices give you two pairs. One is clear for indoor use. One is tinted for outdoor light. The whole protection period runs about four to five weeks. Skipping the glasses can shift the lens in ways that cannot be fixed.
Who Tends to Benefit Most
The lens is approved for adults who have at least 0.75 diopters of corneal astigmatism. Standard astigmatism lenses must be turned to a precise angle during surgery. Even a small spin during healing can hurt the result. With this lens, the astigmatism shaping happens after the eye has settled. Lens rotation is not a concern with this approach. That makes it one of the most precise ways to correct astigmatism with cataract surgery.
Past laser eye surgery changes the shape of the cornea. That makes it harder to predict the right lens power before surgery. Eyes with prior LASIK or PRK have a higher chance of landing off the target with a fixed lens. This adjustable lens helps because the final power is shaped after surgery. The doctor sees how the eye is healing and tunes the result. For many people in this group, the post-surgery shaping is the safest way to chase a glasses-free outcome.
Some people are picky about how their vision works in real life. They want to test it at home, at work, and during hobbies before settling on a final result. This lens fits that goal. You live with the healing vision for a few weeks. You report what works and what does not. The doctor uses your feedback to shape the next round of light treatments. Each step gets you closer to the result you want.
The plus version of the lens gives clear distance vision and a useful range of arm's-length vision. This is the range you use for screens, dashboards, and grocery shelves. The lens does not split light the way some range-of-vision lenses do. So night halos and glare tend to stay mild. Most people with this lens still use reading glasses for fine print. Many find that an easy trade-off for sharper vision the rest of the day.
Who Is Not a Good Fit
The lens is not approved for people with significant macular disease. That includes age-related macular degeneration, scar tissue on the retina, and fluid swelling at the center of the retina from diabetes. The macula is the small central area of the retina that gives you sharp detail vision. When the macula is already damaged, the precision benefits of an adjustable lens cannot make up for it. The light treatments also have not been proven safe in those eyes.
Some prescription drugs make the eye more sensitive to ultraviolet light. Common examples include certain tetracycline antibiotics, the heart-rhythm drug amiodarone, and tamoxifen. People taking these drugs are usually not candidates. The light treatments could hurt the eye when extra UV sensitivity is present. Bring your full medication list to your consultation. Your eye doctor will go through it with you.
This lens needs several follow-up visits. It also needs strict use of the protective glasses for weeks. People who cannot make all the visits or who will not wear the glasses every waking hour are not a good fit. The lens depends on patient effort in a way that fixed lenses do not. The result is only as good as the protection during the adjustable stretch.
A history of certain eye infections can disqualify you. So can very limited pupil dilation or eye-movement disorders that prevent steady aiming during the light treatments. The doctor's exam looks for these specific things. Your consultation is the right place to sort out candidacy.
What to Expect at Each Step
Cataract surgery with this lens looks the same on the outside as cataract surgery with any other lens. The cloudy natural lens is removed. The new lens goes in its place. It is an outpatient visit. Most people go home the same day with a simple shield over the eye. The unique part of the process starts in the days that follow.
For the first two to three weeks after surgery, your eye heals while you wear the protective glasses. Vision often improves quickly during this stretch. But the eye is still settling, so the doctor waits before starting adjustments. This is also when any leftover focus error becomes clear. That is what the light treatments will tune.
Adjustments begin about 17 to 21 days after surgery. You attend several short visits, each spaced a few days apart. At each visit, the doctor checks your vision and shines a measured pattern of light on the lens. Between visits, you go back to your normal life with the glasses on. Then you come back and report what is working. This back-and-forth keeps going until you and the doctor are happy with the result.
Once the right vision is reached, two final lock-in treatments fix the lens shape for good. About a day after the last lock-in, you can put the protective glasses away. The vision you have at that point is the vision you keep. The lens material is built for permanence once locked in. Most people experience a stable result over the long term.
How This Lens Compares to Other Choices
A standard single-focus lens gives good distance vision but offers no flexibility after surgery. If the result is slightly off, you live with it or wear glasses. In the U.S. trial of about 600 patients, people who got the adjustable lens were about twice as likely to reach 20/20 distance vision without glasses at six months compared with people who got a standard single-focus lens. That is a real difference for someone who wants the best chance of skipping glasses.
A standard astigmatism-correcting lens has to be set at a precise rotation during surgery. If it spins even a little while the eye heals, the correction drops off. The adjustable lens shapes astigmatism after the eye has healed. Lens rotation is no longer the same kind of problem. The shaping is done with light, not by physical placement.
Multifocal lenses give a wider range of focus by splitting incoming light into more than one focal point. That can let some people skip reading glasses. But the light splitting often causes glare, halos, and reduced contrast at night. The adjustable lens does not split light. Night-vision side effects tend to be milder. The trade-off is that most patients still use reading glasses for fine close work.
Some other lenses give a wider range of focus through fixed optics. The plus version of the adjustable lens gives a similar range of vision. It also adds the option to fine-tune the result after surgery. If the eye lands slightly off the focus target, that gap can be closed with light treatments. Other extended-range lenses do not offer that backup.
When to See a Doctor
If a cataract is getting in the way of daily activities, a full eye exam is the right first step. The exam measures your eye, checks for conditions that affect candidacy, and starts the conversation about which lens makes sense for you. Lens choice is best made together with a doctor who has examined your eye. Online reading is helpful but cannot replace an exam.
Call your surgeon's office right away if you have sudden pain, sudden loss of vision, more redness than expected, or a shower of new floaters. These can sometimes signal a problem that needs same-day care. Mild ups and downs in vision during the first weeks are common. Most settle on their own. The right move when in doubt is to call.
If your primary care doctor or another specialist starts a new medication while your lens is still in the adjustable stretch, mention that you have a recently placed adjustable lens. Some drugs raise UV sensitivity. That can change how the light treatments work. A quick check with your eye surgeon's office prevents a problem before it starts.
Common Questions About the Adjustable Lens
Pricing varies by region and practice. Insurance and Medicare usually cover the basic cataract surgery. Premium lens choices like this one carry an added fee that the patient typically pays. Most practices share their fee schedule during the consultation. Ask what is and is not included. Some quotes bundle the adjustment visits, while others list them as separate charges.
Most people with the plus version still use reading glasses for very small print. The lens is built for strong distance and arm's-length vision. Near vision usually still benefits from a light reading prescription. If skipping reading glasses entirely is your top goal, say so during the consultation. A different lens or a different vision plan may fit your goal better.
Brief lapses indoors are usually fine. Extended unprotected time outdoors during the adjustable stretch is the bigger risk. If you stepped outside without your glasses, call your surgeon's office and follow their guidance. Honesty matters here. It helps the doctor plan the next adjustment around what may have already shifted.
Most people drive normally between adjustment visits once the doctor clears them after surgery. Vision is often quite functional during this stretch. It may shift a bit between visits as the lens is fine-tuned. Daytime driving is usually fine first. Night driving is sometimes added once vision is more stable. Your surgeon will give specific guidance based on how your eye is healing.
The full process usually runs about four to six weeks from surgery day to final lock-in. Some people move through it faster. Some need a bit longer, depending on how the eye heals and how many adjustments are needed. If both eyes are scheduled, surgeries are typically a couple of weeks apart. The timelines for the two eyes overlap.
Once the lens is locked in, its power does not change. If your vision drifts later in life, the cause is usually elsewhere in the eye. Glasses or contact lenses can correct most later shifts. A small share of patients eventually develop a film behind the lens. That film is treated with a quick in-office laser visit. It is not surgery in the usual sense.
Mild, well-controlled glaucoma does not automatically rule out this lens. But the surgeon will weigh it during your exam. Your glaucoma drops, your eye pressure history, and your ability to wear the protective glasses for several weeks all factor in. Ask your surgeon how your specific case fits. The answer depends on your eye, not on a one-size rule.
Talk to a Cataract Surgeon About Your Options
If you are weighing your options for cataract surgery, the right next step is a consultation. A surgeon can examine your eye and walk you through which lenses suit your goals. Call our office to schedule a cataract evaluation and learn whether a post-surgery adjustable lens is a fit for your vision goals.