Light Adjustable Lens™ by RxSight®

At Montgomery Eye Care, our goal is to remain at the forefront of vision care technology so that we can continue to offer our patients new ways to optimize their vision. One advancement we are particularly proud to offer our patients from the Denver, Westminster and Northglenn, Colorado areas is the Light Adjustable Lens. The lens is adjustable after placement, thereby, giving patients their best opportunity for visual freedom with reduced dependency on glasses and contacts.

two middle aged people hiking during the summer and pointing at things in the distance

What is the Light Adjustable Lens?

The RxSight® Light Adjustable Lens™ (LAL) is the only adjustable intraocular lens approved by the FDA that can be modified after implantation, allowing doctors to optimize a patient’s vision correction.

When the natural lens of the eye becomes clouded by cataracts, cataract surgery is performed to replace the cloudy lens with an artificial intraocular lens (IOL) to restore clear vision. Traditionally, a standard or monofocal IOL is used during cataract surgery. Standard IOLs can less accurately correct near or distance vision, but not both and not astigmatism. Now, we are able to offer our patients the Light Adjustable Lens that can correct vision at a range of distances. In fact, These IOLs are so effective that some patients who do not have cataracts choose to use them to correct their vision in a procedure called refractive lens exchange.

The Light Adjustable Lens goes beyond other advanced IOLs in that its lens power can be fine-tuned after it is placed using a safe UV Light Delivery Device (LDD). This allows Trusetd Source Checkbox Trusted Source Summary of Safety and Effectiveness (SSED) of Light Adjustable Lens and Light Delivery Device system US Food and Drug Administration Go to Source twice as many of our patients to achieve 20/20 vision so that they can reduce or even eliminate their need for eyeglasses or contact lenses.

How Does the Light Adjustable Lens Work?

The Light Adjustable Lens is made from a unique material that is photosensitive, which means that it can be molded by exposure to UV light. Once the lens is placed and the patient has healed, the patient returns to our office so our eye doctors can perform a series of customization treatments. After a brief examination, Dr. Montgomery or Dr. Dugan exposes the LAL to UV light which makes tiny alterations to the curvature of the lens. According to the American Academy of Ophthalmology, this light treatment allows Dr. Montgomery to customize the prescription, or lens power, fine-tuning the patient’s vision for the Trusetd Source Checkbox Trusted Source Adjustable IOL Could Help Some Ditch Their Glasses After Cataract Surgery American Academy of Ophthalmology Go to Source best outcome . Once the ideal refraction has been reached, Dr. Montgomery “locks it in” with a final light treatment to make it permanent.

light adjustable lens diagram of how it works

Benefits of the Light Adjustable Lens

Our patients enjoy so many benefits from the LAL, including:

  • This is the only adjustable IOL that can be fully customized so that patients can “test drive” their vision
  • The process is painless, safe, and fast
  • Refractive outcomes that are more accurate and precise
  • Reduce or eliminate the need for eyeglasses and contact lenses
senior couple ice skating outdoors

Who is a Candidate for the Light Adjustable Lens?

If you are a candidate for cataract surgery or refractive lens exchange, you might be a good candidate for the Light Adjustable Lens. Ideal candidates are cataract patients who:

  • Have astigmatism
  • Do not take medications that make them sensitive to UV light
  • Do not take medications that cause retina damage
  • Do not have a history of herpes eye infections

Patients who have already undergone vision correction surgery like LASIK or PRK are especially good candidates for the LAL. Laser refractive surgery has historically made future eye surgeries like cataract surgery more complex, but that’s not as much of an issue with the LAL.

Preparing for Surgery with the Light Adjustable Lens

If you have been diagnosed with cataracts and are interested in improving your vision with the Light Adjustable Lens, schedule a consultation at Montgomery Eye Care. After a brief examination and review of your medical history, you will have an opportunity to discuss your goals with Dr. Montgomery. If he determines you are a candidate for the LAL, your procedure will be scheduled and you will be given detailed pre- and postoperative instructions.

The LAL Placement Procedure

The Light Adjustable Lens is placed during cataract surgery or during refractive lens exchange, which is an identical procedure that is performed on an outpatient basis.
Learn More About Cataract Surgery

Light Adjustable Lens Recovery and Customization

Dr. Montgomery will go over all postoperative instructions with you before placing your Light Adjustable Lens, and you can always feel free to give us a call if you have questions during your recovery period. It is very important that you wear special UV protective glasses any time you go outside after your lens implantation until your final customization session is complete.

Several weeks after your lens implantation surgery, your eye will have healed enough to begin customization treatments. These treatments are fast, painless, and are performed here at the Montgomery Eye Care office. To begin the treatment session, your vision will be tested. You will sit in front of the specialized Light Delivery Device (LDD), which will emit UV light to minutely alter the curvature of your LAL to fine-tune your prescription. Most of our patients require 2 to 4 treatments spaced a few days apart before they reach their ideal refraction. This gives them the opportunity to “test drive” the lens power and make sure it is right for them. Once the right prescription is achieved, your ophthalmologist will “lock-in” that prescription.

Frequently Asked Questions About the Light Adjustable Lens

What if I don’t wear the UV protective glasses before my prescription is set?

If you skip wearing the special UV protective glasses before your lens power is locked in, you may compromise your prescription and the possibility of achieving your best possible vision.

Are the customization treatments painful?

The customization treatments with the light delivery device take only a few minutes, and your eyes will be numbed before they begin. You might feel some pressure, but pain should not be part of your experience.

How do I know if the Light Adjustable Lens is right for me?

When you come in for your cataract surgery consultation, you will be able to discuss your goals and lifestyle with Dr. Montgomery. Together, you will decide which IOL is best for you.

Contact Montgomery Eye Care

If you live in the Denver, Westminster or Northglenn areas and are interested in learning about how you may be able to achieve visual freedom with the Light Adjustable Lens, please contact us to schedule a consultation at Montgomery Eye Care.

5-Star Rating!

I had cataract surgery on both eyes 3 years ago. Dr. Montgomery made my left eye nearsighted, and right eye farsighted. "I have the best of both worlds!" I can hold a book 5" or 24" from my face and read. Doctor Montgomery and his staff have "always" been extremely professional. I highly recommend this group of pros to anyone looking for eye care.

Ruby C.

I have always received great care from Montgomery Eye Care and an excellent result from the Cataract operation I had a few years ago. If you are looking to get the best eye health then this practice should be high on your list.


Thanks Dr. Montgomery for my cataract surgery, I see great!”


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1 US Food and Drug Administration. Summary of Safety and Effectiveness (SSED) of Light Adjustable Lens and Light Delivery Device system. Available: Accessed October 14, 2022.

2 American Academy of Ophthalmology. Adjustable IOL Could Help Some Ditch Their Glasses After Cataract Surgery. Available: Accessed October 14, 2022.

The doctors at Montgomery Eye Care have authored or reviewed and approved this content. | Page Updated: