Hi, these terms are not used by professionals, at least they should not... Schools for the blind usually rate students' independence by the amount of vision they have. A high partial could go to the reck walking alone, while a low partial needs a buddy to walk with him.

I haven't seen these terms since the 90s. Are they still being used somewhere? In general, vision is so different for everyone in the low vision category (anything that falls in the definition of legal blindness) that this sort of language doesn't give any indication of how or what someone can see. I'm a "high partial" in some situations and "low partial" in others. This is why I just say I'm blind; easier to explain.

As far as I know, these terms don't have precise definitions, but in general:
• exclusively uses large print; either uses large print seldom or never
• often travels without a cane; almost never travels without a cane
• can almost pass for sighted; may be considered blind
• may sometimes use screen magnification; cannot use technology without assistive technology
• can play video games and watch video content with a lot of action with relative ease; may not be able to play some video games and will probably require audio description for most video content

It would be great if people with low vision could chime in and actually share their views, since I'm blind and obviously can't and shouldn't speak for people with low vision.