University of Miami | Bascom Palmer Eye Institute
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In this early feasibility trial the safety and performance of the new retinal prothesis PRIMA is tested in five subjects suffering from atrophic dry age related macular degeneration.
Full description
PRIMA is a new photovoltaic sub-retinal wireless prosthesis for partial restoration of visual perception in patients with vision loss from atrophic dry Age-related Macular Degeneration. The implantable part of the device is placed under the retina. A mini camera mounted on a pair of glasses captures the visual scene in the environment. The visual scene is processed and simplified by the pocket computer connected to the glasses in order to extract useful information from the images. The simplified images are then sent back to the glasses where a miniaturized projector then projects the processed images wirelessly via pulses of near infrared light on the PRIMA implant at the back of the eye under the retina. The photovoltaic cells convert this optical information into electrical stimulation to excite the nerve cells of the retina and induce visual perception. In this early feasibility study five human subjects suffering from atrophic dry age related macular degeneration will receive the implant. The performance and the safety of the device will be monitored for up to 36 months.
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Inclusion and exclusion criteria
Inclusion Criteria:
Is 60 years or older at the date of inclusion;
Has a confirmed diagnosis of atrophic dry age related macular degeneration with an atrophy size of at least 3 optic disc diameters in the study eye;
Has best corrected visual acuity of logMAR 1.3 (20/400) or worse in the study eye measured by ETDRS;
Has a central scotoma in the study eye with no perception at 0 dB on MP-1 micro-perimetry scale in the visual field covering the central 7 degrees (+/-3.5 degrees) and maximum 20% perception in the remaining visual field covering the central 12 degrees (+/- 6 degrees);
Meets one of the following criteria in the non-study eye:
Has a refraction of study eye between -3 and + 4 (limits included) for patients with IOL (there is no refraction criteria for phakic patients);
Understands and accepts the obligation to present for all schedule follow-up visits;
Patient signed informed consent.
Main Exclusion Criteria:
Detailed patient criteria will be verified by the study doctor.
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5 participants in 1 patient group
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Data sourced from clinicaltrials.gov
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