For information contact: Facts On File, Inc. An imprint of Infobase Publishing, Inc. 132 West 31st Street New York NY 10001 Library of Congress Cataloging-in-Publication Data Guiley, Rosemary. The encyclopedia of demons and demonology / Rosemary Ellen Guiley ; foreword by John Zafï¬s. p. cm.
Optometrists dilate a person's eyes so they can see the inside and back of the eyes. An eye exam should be performed annually. An ophthalmologist examines a patient. Normally, a person's pupils contract when light is bright. Routine eye exams are painless and can help detect vision or eye problems early.
Dilating drops (also called âmydriaticsâ) are used to enlarge the pupil for eye examinations to allow the eye doctors to see into the eye in detail. The eye doctor can then see the optic nerve and retina as well as the whole lens.