The term for normal vision would depend on what aspect of normal vision you are talking about. The word for needing no correction because the lens correctly focuses on the retina, it is emmetriopia. The word for being able to see all colors is trichromatopsia.
emmetropia
Visual acuity is the medical term meaning sharpness of vision.
AsthenopiaAsthenopiaAsthenopia
Ectopic is the medical term meaning away from normal location.
Hypotrophy is the medical term meaning less than normal growth.
Hyperopia, myopia, and diplopia are some medical terms meaning a type of vision.
-opia is the medical terminology combining form meaning vision.
A cicatrix is a normal scar.
Ocular is the medical term meaning pertaining to vision. For instance, the extraocular movements (abbreviated EOMs) are the muscle movements that the examiner checks when they ask you to follow their finger while you keep your head still.
Contraction is the medical term meaning the normal shortening or tightening of a muscle.
Constriction is the medical term meaning normal, physiologic narrowing. Stenosis is the medical term meaning abnormal narrowing.
Eutocia is the medical term meaning normal, healthy labor and childbirth. In contract, dystocia is the term meaning abnormal or difficult labor and birth.
Ankylosed is the medical term meaning abnormally bent; flexed is the medical term meaning normal bending of a joint.