Welcome to Dream Views, both of you.

Scarlet: I agree with the others on both questions. My lucid dreams are usually much more vivid than the non-lucids. A good way to get started would be to start up a dream journal, and maybe read some of the others, so you get a feeling of what others experience when they lucid dream. Some of us have our lucid experiences in color so they are easier to find. Attention to detail and a little familiarity with your dream world is all that's really needed to be just as good at LD'ing as anyone else.

Donnadreamer: I would think that you'd have the potential to see better then you could in waking life, while lucid dreaming. You'd be able to adjust your sight to however you saw fit. I think as long as you have some perception of what 20/20 vision would be you can reach that while you are lucid dreaming.
And lucid dreaming, itself, is simply the act of realizing you're dreaming. It is a bit of an awakening, for most people, and a very intense feeling, in itself. Imagine if I were to tell you right know that you're dreaming. Everything around you is a dream, and you have the opportunity to do whatever you wish and interact with your subconsciousness. That rush of anxiety you'd feel? That's what it's like to become lucid in a dream. What you decide to do with the knowledge that you're dreaming is up to you.