###In universe, we are given just enough technobabble to relate to whatever story elements are needed.
In universe, we are given just enough technobabble to relate to whatever story elements are needed.
It does not appear to make any difference which eye the prosthetic is on. Given that Borg nanoprobes improve and enhance physical capabilities in any assimilated specimen, both eyes are likely to already be working at peak efficiency, so it is unlikely the technology is meant to compensate for weakened biological components.
We are not given any indication if the Borg have any choice in what implants they are assigned. In most episodes, when Borg are engaged in activities, those Borg will have whatever ocular implants are necessary to the task.
The Borg Queen and Locutus, for example did not utilize any external optical sensory enhancement. A desire for recognition (and a lack of a particular need for them) may explain why they did not use them. Since Locutus had not completed his transformation into Borg we are not sure if he would have been given one later.
Other drones may use them for local targeting of weapons, an internal heads up display, or for technical support as in repair or medical purposes.
For most technically inclined Borg, at least one eye is almost always converted, likely used as part of the heads up display the Borg use to interact with their technology. Some Borg have both eyes covered completely as well.
Borg heads-up optical display being shown in Star Trek: Borg - Part 3: The Hunt.
The nature of these implants varied from drone to drone, depending on its intended function. We know that all Borg are, upon assimilation, infected with Borg nanoprobes to facilitate the use of Borg implants and connection to the Borg Collective. The basic Borg implants include:
- basic nodes of interlink for communications with the Collective
basic nodes of interlink for communications with the Collective
- myo-neural cortical array to control movements, were implemented in every drone.
myo-neural cortical array to control movements, were implemented in every drone.
- In most cases an eye would be replaced with an eyepiece that improved vision and an arm would be amputated altogether to make room for a functional prosthetic; in tactical drones a weapon would be included, and some drones had medical tools built in. (VOY: "The Gift", "Dark Frontier")
In most cases an eye would be replaced with an eyepiece that improved vision and an arm would be amputated altogether to make room for a functional prosthetic; in tactical drones a weapon would be included, and some drones had medical tools built in. (VOY: "The Gift", "Dark Frontier")
- The implants of a fully assimilated drone allowed it to function for extended periods without shelter, food, water, or even air. It could even survive in the vacuum of space. Memory Alpha: Borg entry
The implants of a fully assimilated drone allowed it to function for extended periods without shelter, food, water, or even air. It could even survive in the vacuum of space. Memory Alpha: Borg entry
The eyepiece must be significant because even infant Borg are outfitted with them.