Complex sentence: Minimally, a patient must have an intact ganglion cell layer in order to be a candidate for a retinal implant, which can be assessed non-invasively using optical coherence tomography (OCT) imaging.
Split into simpler sentences: Minimally, a patient must have an intact ganglion cell layer in order to be a candidate for a retinal implant. This can be assessed non-invasively using optical coherence tomography (OCT) imaging.