Posterior Segment Access Technology (PSAT) is an Interventional Ophthalmology procedure that provides direct anatomically compliant access for treatment of posterior segment diseases by facilitating the delivery of sterile injectables to the back of the eye.
PSAT consists of a small pars plana incision to expose the suprachoroidal or subretinal space, insertion and advancement of the iTrack™ 370P microcatheter to the specific target area while observing the illuminated tip through the pupillary aperture, and delivery of any sterile ophthalmic solution. Surgeon control is enhanced during the PSAT via the 5 mm increment depth markings on the distal end of the iTrack™ 370P. These precise markings provide a depth reference, so that microcatheter position and control can be maintained during initial insertion and prior to rotation of the eye for pupillary aperture visualization.
By aspirating fluids or injecting a solution in the subretinal or suprachoroidal space, efficient, localized, and site-specific treatments can easily be performed.
Prior to the introduction of PSAT, drug therapies for retinal diseases were primarily administered via intravitreal injection. Intravitreal injections may have limited efficacy with some treatments and can be associated with high-risk complications such as endophthalmitis. With PSAT, the iTrack™ 370P microcatheter system enables surgeons to access a very localized target for treatment.To view an animation of the PSAT procedure, click here.
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