I am writing a SciFi novel in which military officers have electronic lenses implanted in their eyes to act as a tactical overlay. It is likely of little consequence, but I am unsure whether or not to call these an Ocular Implant or an Optical Implant, as the words are similar in meaning, but one might imply that the implant is a replacement of the eye with a bionic implant instead of just the lenses.
Is the wording of much consequence in this case?
If so, which would be more appropriate?
To be a bit more specific, I have already written quite a bit using the words interchangeably. Recently it has come to my attention that it could be confusing if the audience thinks everyone is walking around with robotic eyes. I just need to know if it is a distinct enough difference to bother going back and changing everything to the same adjective.