Inclusion criteria |
1. Adults 18 years of age and above |
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2. Diagnosed with end-stage retinitis pigmentosa |
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3. History of being able to read letters |
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4. Either aphakic or pseudophakic or willing to have the crystalline lens removed without intraocular lens implantation |
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5. Willing to accept the clinical follow-up after implantation, including vision rehabilitation |
Main exclusion criteria |
1. Any uncontrolled disease, which may affect the preoperative examinations, implantation operation, and postoperative follow-ups |
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2. Eye diseases that may affect the implantation or functionality of the IMIE 256 implant (e.g., glaucoma, optic nerve disease, central retinal artery or vein occlusion, history of retinal detachment, trauma, severe strabismus) |
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3. Eye pathology that may prevent the successful implantation of the IMIE 256 implant or postoperative healing (e.g., extremely thin conjunctiva, corneal ulcer, axial length < 20.5 mm or > 26 mm) |
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4. Eye pathology that prevents full observation of the internal structure of the eyeball (such as corneal opacity, except cataract) |
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5. Intolerance to general anesthesia or recommended antibiotics and steroids related to implant surgery |
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6. Metal or active electronic implants in the head that may affect the normal function of the IMIE 256 implant |