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!
Laser
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for "light amplification by stimulated emission of radiation". The first laser was built in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow.
A laser differs from other sources of light in that it emits light "coherently". Spatial coherence allows a laser to be focused
Visual impairment
Visual impairment, also known as vision impairment or vision loss, is a decreased ability to see to a degree that causes problems not fixable by usual means, such as glasses. Some also include those who have a decreased ability to see because they do not have access to glasses or contact lenses. Visual impairment is often defined as a best corrected visual acuity of worse than either 20/40 or 20/60. The term blindness is used for complete or nearly complete vision loss. Visual impairment may cause people difficulties with normal