The following is the criteria to be considered legally blind.
"Anyone whose field of vision falls at or below 20 degrees, who wears corrective glasses but whose vision is 20/200 or less in their best eye, or who has no eyesight at all, meets the legal definition of being blind and is eligible for certain deductions." Tax Tips for the Blind
The fact that you have a drivers license says you probably are not considered legally blind.
Blind means your eyesight is not better than 20/200 even with correction.
From the IRS:
Not totally blind.
If you aren't totally blind, you must get a certified statement from an eye doctor (ophthalmologist or optometrist) stating that:
You can't see better than 20/200 in the better eye with glasses or contact lenses, or
Your field of vision is 20 degrees or less.
If your eye condition isn't likely to improve beyond these limits, the statement should include this fact. Keep the statement in your records.
If your vision can be corrected beyond these limits only by contact lenses that you can wear only briefly because of pain, infection, or ulcers, you can take the higher standard deduction for blindness if you otherwise qualify.