RX Sight Light Adjustable Lens
Introducing RxSight’s Light Adjustable Lens
A Personalized IOL Prescription for the Unique Visual Needs of Each Cataract Patient
RxSight’s Light Adjustable Lens technology offers the potential to provide unparalleled visual outcomes to the patient by incorporating an interactive refraction process and the ability to optimize implanted intraocular lens (IOL) based on the patient’s visual preference.
Using a special lens material designed by a Nobel Prize winning scientist, the company has developed the first adjustable intraocular lens that allows office-based optimization of vision after lens implantation and healing.
Check out the official RX Sight video below to learn more:
We at Focal Point Vision are excited to announce the commercial release of the Light Adjustable Lens (LAL) from RxSight! As you may know, the LAL is a three-piece silicone IOL that can be modified in the clinic 2-3 weeks after surgery using a novel light delivery device that induses a change in the IOL of up to two diopters of sphere and/or three diopters of cylinder.
What does this mean? In the FDA trial, 91.8% of eyes (n=391) achieved a result within 0.50 D of the target, which is a level of refractive accuracy more traditionally associated with LASIK than cataract surgery. Additionally, the LAL can be used to improve postoperative results in eyes with a history of refractive surgery like LASIK, PRK, or Radial Keratotomy.
How does the LAL work? First, the patient undergoes traditional or laser cataract surgery with implantation of the LAL, and then the second eye is done a few days later, if indicated. The patient must wear UV protective glasses for 2-3 weeks, and then they undergo at least 2 adjustments in the clinic. The adjustments are performed with the Light Delivery Device (LDD), a machine that resembles a YAG laser. Each adjustment takes 60-120 seconds and is based on the manifest refraction. The surgeon inputs the current refraction and the desired result, and the machine calculates the light pattern. Then, after the operative eye dilates to 7 mm, the surgeon uses a lens coupled to the cornea with gel to focus the light pattern on the LAL optic, exposing the light-sensitive polymers to light for 1-2 minutes. This induces a shape change in the LAL, improving the patient’s vision.
One of the most exciting things about the LAL is that patients can “try out” various scenarios such as monovision, and if they don’t adapt, the surgeon can adjust the LAL for distance.
After achieving the desired result, the LAL is “locked-in” with the LDD, and the patient no longer needs the UV protective glasses. At this point, the LAL is “fixed” and behaves like any other IOL.
Who is a candidate? Currently, the labeling for the LAL is similar to that for a Toric IOL, indicated for implantation in the capsular bag in patients undergoing cataract surgery that have corneal astigmatism. Some contraindications include certain photosensitizing medications, the inability to dilate to 7 mm, and a history of HSV keratitis.
To learn more about RX Sight, you can visit the official their official website by clicking here.