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 that you and your families are well. To continue to protect the health of our patients and staff during the coronavirus pandemic, we are taking all reasonable precautions as we provide the eye care that our community needs:

  • All patients and staff must now wear masks within the clinic building. Please bring one from home.
  • Whenever appropriate, we are rescheduling patients with fever, cough, or cold symptoms
  • We have adjusted our schedule to decrease the number of patients in our waiting rooms
  • We have increased our already strict sanitizing practices
  • 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.

If you are unsure whether to come in for your visit, please call us.

Following state guidelines, the doctors at Central Valley Eye have recently resumed performing elective surgeries. Our surgery coordinators will be contacting patients to reschedule the surgeries that needed to be postponed. We appreciate your patience during this time.

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.