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Implantable Miniature Telescope (for Macular Degeneration)

Implantable Miniature Telescope (for Macular Degeneration)

The Implantable Miniature Telescope (IMT) is a new, FDA-approved intraocular device that provides the potential for vision rehabilitation in patients with severe visual impairment from age-related macular degeneration.  The IMT is available to any patient who qualifies for the device.
To be considered a potential candidate for the telescope implant, patients must meet age, vision and cornea health requirements. The proposed surgical eye must be phakic, meaning that it cannot have had cataract surgery. The patient must have an evaluation with a retina specialist to confirm the diagnosis of AMD and to determine if alternative treatments are possible. The patient then visits with Dr. Koreishi, the cornea surgeon, to determine if they meet important requirements, and to discuss and plan for surgery.  A low-vision optometrist and occupational therapist will work with patients before and after the procedure.  
This intensive evaluation and treatment protocol called CentraSight (VisionCare Ophthalmic Technologies) focuses on comprehensive patient care, requiring prospective patients to undergo medical, visual, and functional evaluation to determine if they may be a good candidate.  This unique team approach is imperative to a patient’s success.  
The Dallas/Fort Worth CentraSight treatment team includes multiple retina specialists in the DFW area.  Dr. Koreishi is the only cornea surgeon in the area who performs the surgery, which is done at Arlington Memorial Hospital.
The outpatient surgical procedure is performed under local anesthesia. The first step in surgery is to perform a traditional cataract removal. After successful removal of the cataract, instead of a traditional intraocular lens, the special IMT is placed in the anterior chamber of the eye. This surgery is more complex due to the special surgical approach and very large incision size required to implant the IMT. Therefore the post-operative healing time is extended as compared to traditional cataract surgery. 
The telescope implant is not a cure for end-stage AMD. As with any medical intervention, potential risks and complications exist with the telescope implant. Possible side effects include decreased vision or vision-impairing corneal swelling.
Resources for patients and family can be found at

Recent Media coverage:
  • July 10, 2013: Dr. Koreishi was interviewed on WFAA News 8 about the implantable miniature telescope (IMT) procedure for patients with end-stage age-related macualr degeneration. The story features the first DFW patient to have the IMT surgery. Please click the link below to watch the story.
  • June 25, 2013: NPR's local station, KERA news, reported a story on the implantable miniature telescope (IMT) and another IMT patient sucess story!
  • NBC nightly news with Brian Williams aired a story on the implantable telescope featuring Dr. Koreishi's alma mater, The WIlmer Eye Institue at Johns Hopkins Hospital, where she began her ophthalmology training.

As a cornea specialist in DFW, Dallas-Fort Worth, Dr. Koreishi strives to provide the best cornea care, availability, and patient education. Now open Plano Cornea.


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