Eyeworld

SEPTEMBER 2021 | EYEWORLD | 53 C Relevant disclosures Chang: RxSight, Perfect Lens Loden: None Naids: None Ristvedt: None How does Perfect Lens differ from the LAL? Another adjustable technology in development is Perfect Lens. Dr. Chang said this system would modify the IOL power and design using an in situ femtosecond laser treatment. The technology has been tested in animals and test- ing in human eyes is just underway, he said. Dr. Loden said he thinks Perfect Lens and LAL are two very different products. The LAL is a silicone three-piece lens that adjusts its power with UV light. The Perfect Lens is a femtosecond laser that is used to change the refractive index of a lens that has been already implanted in order to adjust the power of the IOL. Dr. Naids said the idea of the Perfect Lens being able to modify an existing IOL would open up the possibility of lens changes based on patient preference and could help with refrac- tive misses/IOL exchanges. It sounds promising, he said, but he noted that he still thinks LAL will have a place in the treatment paradigm, especially since it's continuing to get better. "We have something that we know is viable and gives us good results," he said. Dr. Loden added that there has also been a recent upgrade to the software for treatment of astigmatism down to 0.5 D. Dr. Ristvedt said she thinks ActivShield helps patients and prevents premature lock-in. "I think that's one of the things that the compa- ny has been thinking about," she said. "They're thinking about the flow and patients having to be tied to wearing ultraviolet glasses and get- ting treatments consecutively." Dr. Chang also noted the recent FDA ap- proval of the ActivShield. "Although the label still specifies UV glasses, Arturo Chayet, MD, has used this LAL version in a series of patients without them wearing any UV glasses," Dr. Chang said. "If UV glasses eventually turn out to be unnecessary, this would be a revolutionary advance in the technology." He also mentioned that RxSight has devel- oped an EDOF adjustment that could be cen- tered on the visual axis of the near eye postop- eratively. "This would be of enormous value in reducing the amount of myopia needed to pro- vide functional reading ability," he said. "These innovations will make the technology even more attractive to our refractive patients." The RxSight light delivery system makes precise changes in the shape of the IOL optic. To demonstrate the precision, it has been used to inscribe the RxSight logo onto the IOL optic in vitro. Source: RxSight

• Blank Page
• Blank Page (1)