The iStent inject®

Compelling new treatment option for managing glaucoma available now at The Eye Institute.

The new iStent inject, designed to help glaucoma patients achieve and maintain lower eye pressures, is available now, according to ophthalmologist and cornea, cataract and glaucoma specialist, Jason K. Darlington, MD, of The Eye Institute for Medicine & Surgery.

Photo courtesy of The Eye Institute for Medicine & Surgery.

Dr. Darlington (left) and Dr. McManus

Dr. Darlington, who has performed extensive surgical research for Glaukos®, the company that developed the iStent, explains that this new device is designed to optimize the natural outflow of certain fluids inside the eye – known as aqueous humor – by creating two bypasses through the part of the eye largely responsible for fluid drainage.
“By enhancing fluid outflow, we are able to reduce a patient’s eye pressure on an ongoing basis, oftentimes without the need for eye medications or with a reduced number of eye medications,” says Dr. Darlington.
Achieving and maintaining reduced eye pressure is the key to maintaining the health of a patient’s optic nerve, thus maintaining their vision, explains James N. McManus, MD, cataract and glaucoma specialist at The Eye Institute.
“More than four hundred thousand generation one iStents have been implanted worldwide since 2012,” informs
Dr. Darlington. “The iStent has earned a reputation of demonstrated efficacy and safety.”
An interesting fact is that the iStent inject stent, at approximately 0.23 mm x 0.36 mm, is the smallest medical device ever approved by the FDA, notes Dr. Darlington.
In the key trials leading to the FDA approval of the iStent inject, over 75 percent of patients achieved a 20 percent or greater reduction in unmedicated eye pressure. In terms of the units used to measure eye pressure, this translates into a seven point decrease in eye pressures for this same group.

Screening Is Critical

Diagnosing and appropriately managing glaucoma is of the greatest importance, emphasizes Dr. McManus, because if glaucoma is present and not treated, the result can be permanent loss of vision, up to and including blindness.
In the early through later stages of the disease, glaucoma is largely asymptomatic. There is no pain and no obvious loss of vision. There is nothing to directly tell a patient that he or she has glaucoma, adds Dr. McManus.
Because glaucoma is a progressive and irreversible disease that may lead to vision loss caused by optic nerve damage, it is critical for people to be screened for glaucoma and for them to receive the treatment they need without delay, says Dr. Darlington.
Those at greater risk for developing glaucoma include:

  • People over age 40
  • People who experience elevated eye pressures on a regular basis
  • Immediate family members of people diagnosed with glaucoma
  • People with diabetes and/or high blood pressure
  • African Americans
  • Hispanic Americans
  • People of Asian ancestry
  • People with a history of eye injuries or certain eye conditions, such as farsightedness or nearsightedness
  • Medical conditions that affect blood flow such as migraines and low blood pressure
  • Prolonged corticosteroid use, including pills, eye drops, inhalers and creams

“It is estimated that half of the people who have glaucoma are unaware of it, and because of this, they are not receiving any type of treatment,” states Dr. McManus.
“If you or a loved one have one or more of the risk factors above, receiving a comprehensive eye examination by an eye doctor may be one of the most important things you can do for yourself and your family,” advises Dr. McManus.

Article courtesy of The Eye Institute for Medicine & Surgery.
Print This Article
    • The Eye Institute for Medicine & Surgery

      The Eye Institute for Medicine & Surgery is a fully modern and completely comprehensive medical and surgical eye care practice with offices located throughout Brevard County, Florida.Their practice features a Medicare certified and f... Read More

    • Jason K. Darlington, MD

      Jason K. Darlington, MD, graduated with highest honors from the University of California Davis. He attended UC Davis Medical School, followed by an internship at Scripps Mercy Hospital in San Diego. He completed his residency in ophthalmology a... Read More

    • James N. McManus, MD

      James N. McManus, MD, is board certified by the American Board of Ophthalmology. He graduated cum laude from Dartmouth College in 1979 with a Bachelor of Science degree and earned his medical doctorate from the University of Massachusetts in 19... Read More

    • Hetal D. Vaishnav, MD

      Hetal D. Vaishnav, MD, is board certified by the American Board of Ophthalmology. He is a graduate of Morehouse Medical School in Atlanta. He served his residency in ophthalmology, as well as a fellowship in retina and vitreous diseases and su... Read More