Being visual imparired means you have a decreased ability to see.
I wear glasses, so I certainly understand what visually impaired means!  I can't see much without them.
Is your vision worse than 20/40 or 20/60?
To be honest, I am not sure.  What do the numbers mean?
I am not sure but do you have difficulties with driving, or reading?
More with driving.  I can read pretty much okay.
I see, cataracts are the most common cause of blindness, maybe you have that.
Oh I hope not, because that means surgery.  I can't even imagine a laser or knife in my eye!
A laser is just a device that emits light. 
Logically, I realize that.... but that light can cut!  My eyes are watering just thinking about it!