Good Vision For Life. We know how important your vision is to you at the office of John W. Barnhart, O.D. in Warren, OH. It is important to every member of our caring staff as well. We make sure to schedule ample time for your appointment so you will never feel rushed during your visit. While we specialize in infants and toddler optometry, our office also provides complete eye care for adults. Services provided at our office include- • Comprehensive eye exams • Contact lenses • Laser vision correction • Treatment for eye diseases • Vision therapy • Treatment of eye infections and injuries Our eye exams will check your vision inside and out for any potential disorders or diseases such as glaucoma or astigmatism. Your visual skills and abilities are carefully evaluated and we'll provide the medication, lenses, surgery or vision therapy you need. Give the office of John W. Barnhart a call today to schedule an appointment and to receive a free developmental vision screening!