Implantable Miniature Telescope

Screen Shot 2015-08-09 at 10.05.50 AMSouthern Vitreoretinal is participating in the implantable miniature telescope for advanced macular degeneration.   SVA doctors will confirm the diagnosis of End-Stage AMD, and possibly refer to a cataract surgeon for the telescope implantation procedure if the patient is a good candidate who meets all the eligibility requirements.

INDICATION FOR USE (USA):

The intraocular telescope is indicated for monocular implantation to improve vision in patients greater than or equal to 65 years of age with stable severe to profound vision impairment (best-corrected distance visual acuity 20/160 to 20/800) caused by bilateral central scotomas associated with end-stage age-related macular degeneration.

Patients must:

  • have retinal findings of geographic atrophy or disciform scar with foveal involvement, as determined by fluorescein angiography
  • have evidence of visually significant cataract (Grade 2)
  • agree to undergo pre-surgery training and assessment (typically 2 to 4 sessions) with low vision specialists (optometrist or occupational therapist) in the use of an external telescope sufficient for patient assessment and for the patient to make an informed decision
  • achieve at least a 5-letter improvement on the ETDRS chart with an external telescope
  • have adequate peripheral vision in the eye not scheduled for surgery
  • agree to participate in postoperative visual training with a low vision specialist.

CONTRAINDICATIONS:

Implantation of the intraocular telescope is contraindicated in patients:

  • with Stargardt’s macular dystrophy
  • with central anterior chamber depth (ACD) < 3.0 mm; measurement
    of the ACD should be taken from the posterior surface of the cornea (endothelium) to the anterior surface of the crystalline lens
  • with the presence of corneal guttata
  • who do not meet the minimum age and endothelial cell density

requirements (age 65 to < 70 min. cell density 2300 cells/mm2; age 70 to < 75 min. cell density 2000 cells/mm2; age 75 or greater min. cell density 1800 cells/mm2)

  • with cognitive impairment that would interfere with the ability to understand and complete the Acceptance of Risk and Informed Decision Agreement or prevent proper visual training/rehabilitation with the device
  • who have evidence of active CNV on fluorescein angiography or treatment for CNV within the past six months
  • with any ophthalmic pathology that compromises the patient’s peripheral vision in the fellow eye
  • with previous intraocular or cornea surgery of any kind in the operative eye, including any type of surgery for either refractive or therapeutic purposes
  • who have prior or expected ophthalmic related surgery within 30 days preceding intraocular telescope implantation
  • with a history of steroid-responsive rise in intraocular pressure, uncontrolled glaucoma, or preoperative IOP > 22 mm Hg, while on maximum medication
  • with known sensitivity to post-operative medications
  • who have a history of eye rubbing or an ocular condition that predisposes them to eye rubbing in whom the planned operative eye has:
    • Myopia > 6.0 D, Hyperopia > 4.0 D
    • Axial length < 21 mm
    • A narrow angle, i.e., < Schaffer grade 2
    • Cornea stromal or endothelial dystrophies, including guttata Inflammatory ocular disease
    • Zonular weakness/instability of crystalline lens, or pseudoexfoliation Diabetic retinopathy, untreated retinal tears, retinal vascular disease,
      history of retinal detachment, retinitis pigmentosa Intraocular tumor
    • Optic nerve disease 
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