Medically reviewed by Krishna Surapaneni, MD, board-certified ophthalmologist and cataract, cornea, and refractive surgeon at SuraVision in Houston.
Most lens implants ask you to make every decision before surgery. The Light Adjustable Lens works differently. It is the only lens implant that can be adjusted after your eye has healed, using painless light treatments to fine-tune your vision based on how you actually see, not on predictions.
Here is how it works, who it is a good fit for, and what to expect if you choose it.
What Is the Light Adjustable Lens?
The Light Adjustable Lens (LAL), made by RxSight, is an artificial lens placed in your eye during cataract surgery or refractive lens exchange. It replaces your natural lens, just like a standard lens implant.
The difference is the material. The LAL is made of a special photosensitive silicone that changes shape in response to ultraviolet light. After your eye heals, your surgeon uses a device called a Light Delivery Device to reshape the lens while it is still in your eye, until your vision matches your goals. The FDA approved this lens in 2017, and it is the first and only adjustable lens implant available in the United States.
Why Adjustability Matters
Standard lens implants are chosen using measurements taken before surgery. Those measurements are good, but every eye heals a little differently, and small surprises in healing can leave your vision slightly off target. For most people the result is still very good. Some end up wearing glasses for residual blur they hoped to avoid.
The LAL sidesteps much of that uncertainty. You and your surgeon test-drive your vision after healing, then adjust. If you want to try a different balance, such as a bit more near vision, you can preview it in real life before locking it in. In the clinical studies submitted to the FDA, patients with the LAL were about twice as likely to reach 20/20 or better without glasses than patients with a standard monofocal lens.
How the Adjustment Process Works
The surgery itself is the same outpatient procedure used for other lens implants. The adjustment phase comes after:
- Healing period. Your eye settles for about 2 to 3 weeks after surgery.
- Light treatments. You will have 2 to 4 short office visits. Each treatment takes about 90 seconds per eye. You will look into a light. No needles, no surgery, and no discomfort for most patients.
- Lock-in. Once you are happy with your vision, two final light treatments set the lens permanently.
One important commitment: you will wear special UV-protective glasses during waking hours from surgery until lock-in, usually 4 to 6 weeks. Sunlight could otherwise change the lens before your surgeon locks it in. Patients who cannot commit to the glasses are not good candidates.
Does the Light Adjustable Lens Correct Astigmatism?
Yes. Astigmatism (an oval-shaped curve to the eye that blurs vision at all distances) can be treated during the light adjustments. This is one of the LAL’s strengths: instead of estimating your astigmatism correction before surgery, your surgeon corrects what is actually there after healing.
Who Is a Good Candidate?
The LAL may be a strong option if you:
- Have cataracts and want the best chance of sharp vision without glasses
- Have astigmatism
- Had LASIK or PRK years ago, since prior laser surgery makes standard lens calculations less predictable and the LAL’s adjustability helps
- Have strong preferences about your final vision and want to test it before committing
It is not the right fit for everyone. You will need to attend the follow-up visits, wear the UV glasses faithfully, and have eyes healthy enough for the light treatments. Certain eye conditions and medications that increase light sensitivity can rule it out. The honest way to find out is a consultation and a full exam.
What Does the Light Adjustable Lens Cost?
The LAL is a premium lens, and the adjustment technology adds cost beyond a standard implant. Insurance and Medicare typically cover the cataract surgery portion but not the premium lens upgrade or the light treatments. Pricing depends on your eyes and your plan, so the most useful step is a consultation where you will get exact numbers for your situation, including options if you are paying without insurance.
Frequently Asked Questions
How long does the Light Adjustable Lens last?
The lens is permanent. Once locked in, it stays in your eye for life and cannot be changed by sunlight or further light exposure.
Is the Light Adjustable Lens multifocal?
No. It is an adjustable monofocal lens. Many patients choose a customized blend (one eye favoring distance, one favoring near) that they preview during the adjustment phase before deciding.
How many light treatments will I need?
Most patients have 2 to 4 adjustment visits plus 2 lock-in treatments, each about 90 seconds per eye.
Is the Light Adjustable Lens worth it?
That depends on how much precision matters to you. Patients who want the best odds of glasses-free vision, especially those with astigmatism or prior LASIK, tend to value the adjustability most. A consultation will tell you whether your eyes are suited to it.
Fine-Tune Your Vision in Houston
Ready to take the next step toward clearer vision? Schedule a consultation with SuraVision today to discuss your options and learn more about the Light Adjustable Lens and your other cataract surgery lens choices. Call us at 713-730-2020 or book your appointment online. Not sure whether you have cataracts? Start with the Cataract Self Test.