Minimally Invasive Glaucoma Surgery

MIGS (minimally invasive glaucoma surgery) is another surgical treatment that is performed to lower the eye pressure in patients with open angle glaucoma. At Central Valley Eye, the main MIGS procedure performed is the placement of a device called the iStent. The iStent is a small metal tube that is inserted through the trabecular meshwork, allowing fluid in the eye to pass through and exit the eye, thus lowering the pressure. Open in place, the iStent is left in the eye for the rest of your life. In most cases, the iStent is offered to patients at the same time as their cataract surgery, when the surgeon is going to be working in the eye. The placement of the iStent adds about 5 minutes to the cataract surgery.

The metal in the iStent is safe for use in an MRI machine and will not set off metal detectors at security. Correct placement of the iStent in the trabecular meshwork makes it impossible to see it with the naked eye, however, your surgeon will be able to confirm its position during clinic visits using special mirrored lenses.

Other MIGS procedures, including goniotomy, supracilliary bypass procedures and ciliary ablation are considered on a case by case basis and will be recommended if your surgeon believes it would be of benefit.


If you would like to learn more about Minimally Invasive Glaucoma Surgery call 1-800-244-9907 to make an appointment at Central Valley Eye Medical Group.


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Dear Friends,

We at Central Valley Eye hope you and your families are well. With COVID-19 infections continuing to rise, we are taking all necessary precautions to keep patients and staff healthy as we continue to provide the eye care that our community needs:
  • Whenever appropriate, we are rescheduling any patients with cough or cold symptoms
  • We have adjusted our schedule to decrease the number of patients in our waiting rooms. You can expect on average between zero and one patient to be in the waiting room at any given time.
  • We have increased our already strict sanitizing practices to extend into the waiting areas and halls.
  • Whenever appropriate, we are diverting visits to telemedicine (by cell phone, tablet, laptop, or desktop). Please contact us for further details at 209-952-3700.

    Additionally, some of our office locations may be closed on certain days. If you are unsure whether to come in for your visit, please call us.

    The doctors at Central Valley Eye will not be performing any non-urgent surgeries until further notice. Our surgery coordinators will be contacting patients to reschedule the surgeries that need to be postponed.

    If you have any questions, please do not hesitate to contact us at 209-952-3700.

    Warmest regards,

    Brandy Simpson
    Practice Manager
    Central Valley Eye Medical Group, Inc.