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.
A dilated eye exam lets your eye doctor see the back of your eye (retina). It's usually done as part of a regular eye exam. Your doctor will use eyedrops to widen (dilate) your pupils.