Nav: Home

A simulator allows patients to experiment how their vision will improve before surgery

February 07, 2019

The details regarding the validation of this new device are published in the latest issue of Scientific Reports.

Multifocal lenses are used in cataract surgeries - to replace the crystalline when it has lost its transparency - or to correct for presbyopia. There are different lens designs in the market, and choosing one or another depends on each patient's tolerance and preference.

"The possibility of the patient experimenting vison with a multifocal lens before the surgery is very attractive to reduce uncertainty and to manage expectations", ensures CSIC researcher Susana Marcos, who works at the Institute of Optics. Her team at the Visual Optics and Biophotonics Laboratory has spent years developing technologies of simultaneous vision simulation aiming at evaluating visual quality with new designs of multifocal lenses before they are implanted or even manufactured.

Now, they are introducing SimVis, a lightweight binocular visual simulator which is autonomous and wearable in helmets. In the article, scientists show the equivalence between the vision provided by their device and the intraocular lenses. In other words, lenses are depicted in the simulator.

A realistic experience

"Visual simulators are an ideal technique to provide patients with a new realistic experience of multifocality before the implantation of a new intraocular lens. In addition, if the simulator is miniaturized and has a more practical design than the ones currently available in the market, benefits could multiply", adds Marcos.

Researchers validated the simulator's realism in a group of patients by comparing the visual acuity obtained at different distances through a commercial trifocal lens - with focal points for close, intermediate and long focal distances - and through the same lens simulated by a spatial light modulator (another simulating technology) and by SimVis . "The response to multifocality depends on the subjects, but the real trifocal lens and the simulated one offered the same visual response through-focus in each patient", concludes CSIC researcher María Viñas, first author of the article.

The new simulator can be wirelessly controlled by a mobile application or a tablet. With this program it is possible not just controlling the device's lenses, but also to track the functional tests conducted on each patient wherever they are.

The technology developed by this group of CSIC scientists is protected by four patents - one of them received the award "Premio a la Mejor Patente del Año" from the Madrid+d Foundation - owned by CSIC, and licensed to the company 2EyesVision S.L., a spin-off founded, among others, by some of the study researchers.
-end-


Spanish National Research Council (CSIC)

Related Surgery Articles:

Colorectal surgery patients use fewer opioids, report less pain with enhanced recovery after surgery
Colorectal surgery patients who were a part of an enhanced recovery after surgery (ERAS) program had less pain, while using nearly half as many opioids, according to research being presented at the ANESTHESIOLOGY® 2019 annual meeting.
Video assisted lung surgery reduces complications and hospital stays compared to open surgery
Video-assisted thoracic surgery is associated with lower in-hospital complications and shorter length of stay compared with open surgery among British patients who were diagnosed at an early stage of lung cancer, according to research presented today the IASLC 2019 World Conference on Lung Cancer, hosted by the International Association for the Study of Lung Cancer.
Most deaths related to noncardiac surgery occur after surgery and after discharge from hospital
It's not the operating room that is risky for patients undergoing noncardiac surgery; it's the recovery period.
Study looks at opioid use after knee surgery
A small study looked at whether reducing the number of opioid tablets prescribed after knee surgery would reduce postoperative use and if preoperative opioid-use education would reduce it even more.
Surgery patients are getting older every year
A new BJS (British Journal of Surgery) analysis reveals that people undergoing surgery in England are getting older at a faster rate than the general population.
Children requiring thyroid surgery have better outcomes at high-volume surgery centers
New research recently published in the Journal of Pediatric Surgery found that post-operative success rates of pediatric thyroid patients, particularly children who require a thyroidectomy, correlate with the institution's patient volume.
Do negative public attitudes toward weight loss surgery stop some patients from having surgery?
Most patients who qualify for weight loss surgery don't have the procedure despite its safety and effectiveness.
For spinal fusion surgery patients, taking opioids before surgery is major risk factor for long-term opioid use
Patients taking opioids for at least three months before spinal fusion surgery in the lower spine are much more likely to continue taking opioids one year after surgery, reports a study in Spine.
Robotic surgery as effective as open surgery for bladder cancer
Robotic surgery is as effective as traditional open surgery in treating bladder cancer, according to a landmark study published in the journal Lancet.
Spine surgery patients less likely to be opioid dependent after surgery
Spine surgeons and researchers at UofL, concerned about potential opioid misuse resulting from pain management related to surgery, have discovered positive news in a study of back surgery patients.
More Surgery News and Surgery Current Events

Best Science Podcasts 2019

We have hand picked the best science podcasts for 2019. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

Rethinking Anger
Anger is universal and complex: it can be quiet, festering, justified, vengeful, and destructive. This hour, TED speakers explore the many sides of anger, why we need it, and who's allowed to feel it. Guests include psychologists Ryan Martin and Russell Kolts, writer Soraya Chemaly, former talk radio host Lisa Fritsch, and business professor Dan Moshavi.
Now Playing: Science for the People

#538 Nobels and Astrophysics
This week we start with this year's physics Nobel Prize awarded to Jim Peebles, Michel Mayor, and Didier Queloz and finish with a discussion of the Nobel Prizes as a way to award and highlight important science. Are they still relevant? When science breakthroughs are built on the backs of hundreds -- and sometimes thousands -- of people's hard work, how do you pick just three to highlight? Join host Rachelle Saunders and astrophysicist, author, and science communicator Ethan Siegel for their chat about astrophysics and Nobel Prizes.