Showing posts with label Ophthalmology. Show all posts
Showing posts with label Ophthalmology. Show all posts
Thursday, August 14, 2014
Borough Center for Sight offers new advances in cataract and refractive surgery
Cataract removal is one of the most common and safest surgical procedures worldwide. Until recently, however, cataracts were still manually removed by the eye surgeon with the aid of a phacoemulsification machine. Then, an intraocular artificial implant is then placed inside the eye for visual recovery.
Today, on the other hand, recent advancement in technology has given birth to Laser Assisted Cataract Surgery or LACS. One of the more popular lasers is the LENSAR LASER SYSTEM (LLS).
The LLS features Augmented Reality with 3-D reconstructed view of the eye, helping the surgeon plan and proceed with treatment with unparalleled confidence.
It has the most advanced imaging capability that visualizes the vital parts of the eye before and during the surgical procedure. It is the only laser that uses the Scheimpflug imaging technology and uses the same proven laser technology used in LASIK procedures.
With a slight push of a button, the LLS initiates bladeless corneal incisions, rounded centered capsulotomies and softening of the cataract.
In layman’s terms, LENSAR opens the front covering of the lens, softens the cataract and breaks it down into smaller pieces allowing the surgeon to remove the cataract with ease.
With a perfectly rounded and centered capsulotomy, the surgeon can insert an intraocular implant in the eye with such precision that the patient is assured of lifelong clear vision.
Meanwhile, manual capsulotomies are hard to center and are, more often than not, irregularly shaped that may lead to the decentration of the intraocular lens or IOLs (more importantly for multifocal IOLs), which can result to changes in the quality of vision of patients after cataract surgery.
Borough Center for Sight, one of the country’s premier eye care clinics, with branches in CyberOne Building, Eastwood, Quezon City and at the South Wing of SM Mall of Asia offers Laser Assisted Cataract Surgery. The center has a roster of well trained and experienced eye doctors who can provide expert advice on eye care and surgery.
Borough Center for Eyes also offers Lens Replacement Surgery for those who elect to have their natural lens replaced with an intraocular lens to achieve good quality vision for far, intermediate and reading distances without glasses.
source: interaksyon.com
Wednesday, January 15, 2014
Eye doctors warn of damage from lasers
NEW YORK - Powerful lasers that are easily purchased online pose a serious danger to vision, according to a new report.
Doctors from the Duke University Medical Center in Durham, North Carolina, report on the case of a nine-year-old boy who showed up at their hospital after being blinded by an adult playing with a handheld laser.
"Until he came in, no one had realized there was an actual injury and we saw the bleeding," Dr. Cynthia Toth, one of the authors of the new report, told Reuters Health.
The high-power laser had passed through the boy's eye lenses and burst the blood vessels in the back of his eyes.
"This was a larger device that was sold as some toy, but it's a dangerous weapon," Toth said. "You can start a fire with the power that was coming out of that one."
Toth is a professor of ophthalmology and biomedical engineering at Duke. She also has a long history of studying and working with lasers.
The high-power laser was made from a component of a dismantled home theater projector and purchased online.
A laser, according to the US Food and Drug Administration (FDA), is a "powerful, targeted beam of electromagnetic radiation that is used in many products, from music players and printers to eye-surgery tools."
The FDA regulates lasers, as it does other radiation-emitting electronic products, and separates them into classes and subclasses.
Class 3a lasers include those typically used for pointing during presentations. Their power is capped at 5 milliwatts (mW) on the visible light spectrum under federal regulation. Class 4 lasers are the type used in industrial or medical settings and are an immediate hazard.
The laser used on the boy in the new report falls into class 4, according to the researchers. It produced 1,250 mW of power.
The boy's vision eventually recovered after two months, Toth and her colleagues report in JAMA Ophthalmology.
But other people are not so fortunate, Toth said.
Within the past few months, other reports of eye injuries by lasers were published in other journals, Toth said. In one case, a laser burned a hole through the back of a person's eye.
"I do think that higher power lasers are more available than they were in the past," she said. "For that reason, I wouldn't be surprised if there was an increase in the number of injuries."
"The amount of damage correlates to the strength of the laser," Dr. Stacy Pineles, assistant professor of ophthalmology and a retinal specialist at the Stein Eye Institute at the University of California, Los Angeles, told Reuters Health in an email.
"Shorter wavelength lasers that are now available to consumers as described in this article are more easily absorbed by the retina and therefore can cause severe and sometimes permanent vision loss," Pineles, who was not involved in the new report, said.
People who work with lasers should wear protective goggles, she said. "Different types of lasers require specific goggles for maximum protection."
Toth said it's also important that people don't let children play with lasers of any type.
"Even a so-called safe level can also be dangerous," she said, adding that people who think they are injured should see a doctor.
source: interaksyon.com
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