Med Surg Visual and Auditory Systems Chap 21

Astigmatism

Defective curvature of the cornea or lens of the eye

Conjunctive

Serving to bind together; connective

Hyperopia

Farsightedness; difficulty seeing close objects when light rays are focused on a point behind the retina

Lens

Biconvex transparent body situated behind the iris in the eye

Myopia

Nearsightedness ; lack of foresight ;

Mystagmus

Involuntary rhythmic motions of the eye

Presbycusis

Hearing loss due to aging

Presbyopia

Impaired vision as a result of aging

Refraction

Bending of a ray of light

Retina

Innermost layer that perceives and transmits light to the optic nerve

Sclera

Tough, fibrous, white outer coat extending from the cornea to the optic nerve

Tinnitus

Ringing in the ears

Vertigo

Dizziness