Manual of Neuro-ophthalmology Manual of Neuro-ophthalmology Amar Agarwal MS FRCS FRCOphth Athiya Agarwal MD DO Dr Agarwal’s Group of Eye Hospitals and Eye Research Centre 19, Cathedral Road, Chennai - 600 086, India ® JAYPEE BROTHERS MEDICAL PUBLISHERS (P) LTD New Delhi • Ahmedabad • Bengaluru • Chennai • Hyderabad Kochi • Kolkata • Lucknow • Mumbai • Nagpur Published by Jitendar P Vij Jaypee Brothers Medical Publishers (P) Ltd Corporate Office 4838/24, Ansari Road, Daryaganj, New Delhi 110 002, India Phone: +91-11-43574357 Registered Office B-3, EMCA House, 23/23B Ansari Road, Daryaganj, New Delhi 110 002, India Phones: +91-11-23272143, +91-11-23272703, +91-11-23282021, +91-11-23245672 Rel: +91-11-32558559 Fax: +91-11-23276490, +91-11-23245683 e-mail: [email protected] Visit our website: www.jaypeebrothers.com Branches • 2/B, Akruti Society, Jodhpur Gam Road Satellite Ahmedabad 380 015 Phones: +91-79-26926233, Rel: +91-79-32988717 Fax: +91-79-26927094 e-mail: [email protected] • 202 Batavia Chambers, 8 Kumara Krupa Road, Kumara Park East Bengaluru 560 001 Phones: +91-80-22285971, +91-80-22382956, +91-80-22372664 Rel: +91-80-32714073 Fax: +91-80-22281761 e-mail: [email protected] • 282 IIIrd Floor, Khaleel Shirazi Estate, Fountain Plaza, Pantheon Road Chennai 600 008 Phones: +91-44-28193265, +91-44-28194897, Rel: +91-44-32972089 Fax: +91-44-28193231 e-mail: [email protected] • 4-2-1067/1-3, 1st Floor, Balaji Building, Ramkote Cross Road Hyderabad 500 095 Phones: +91-40-66610020, +91-40-24758498 Rel:+91-40-32940929 Fax:+91-40-24758499, e-mail: [email protected] • No. 41/3098, B & B1, Kuruvi Building, St. Vincent Road Kochi 682 018, Kerala Phones: +91-484-4036109, +91-484-2395739, +91-484-2395740 e-mail: [email protected] • 1-A Indian Mirror Street, Wellington Square Kolkata 700 013 Phones: +91-33-22651926, +91-33-22276404, +91-33-22276415 Rel: +91-33-32901926 Fax: +91-33-22656075, e-mail: [email protected] • Lekhraj Market III, B-2, Sector-4, Faizabad Road, Indira Nagar Lucknow 226 016 Phones: +91-522-3040553, +91-522-3040554 e-mail: [email protected] • 106 Amit Industrial Estate, 61 Dr SS Rao Road, Near MGM Hospital, Parel Mumbai 400012 Phones: +91-22-24124863, +91-22-24104532, Rel: +91-22-32926896 Fax: +91-22-24160828, e-mail: [email protected] • “KAMALPUSHPA” 38, Reshimbag, Opp. Mohota Science College, Umred Road Nagpur 440 009 (MS) Phone: Rel: +91-712-3245220, Fax: +91-712-2704275 e-mail: [email protected] USA Office 1745, Pheasant Run Drive, Maryland Heights (Missouri), MO 63043, USA Ph: 001-636-6279734 e-mail: [email protected], [email protected] Manual of Neuro-ophthalmology © 2008, Jaypee Brothers Medical Publishers All rights reserved. No part of this publication should be reproduced, stored in a retrieval system, or transmitted in any form or by any means: electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the authors and the publisher. This book has been published in good faith that the material provided by authors is original. Every effort is made to ensure accuracy of material, but the publisher, printer and authors will not be held responsible for any inadvertent error(s). In case of any dispute, all legal matters are to be settled under Delhi jurisdiction only. First Edition: 2009 ISBN 978-81-8448-411-3 Typeset at JPBMP typesetting unit Printed at Ajanta This book is dedicated to a lovely couple Marguerite Mcdonald and Stephen Klyce Contributors Amar Agarwal MS FRCS FRCOPHTH Dr. Agarwal’s Group of Eye Hospitals and Eye Research Centre 19, Cathedral Road Chennai-600 086, India [email protected] Athiya Agarwal MD DO Dr. Agarwal’s Group of Eye Hospitals and Eye Research Centre 19, Cathedral Road Chennai-600 086, India [email protected] Garrett Smith MD Moran Eye Center Salt Nake City, UTAH USA Jeyalakshmi Govindan DO DNB Consultant Ophthalmologist Dr. Agarwal’s Eye Hospital 19, Cathedral Road Chennai, India Nick Mamalis MD Moran Eye Center Salt Nake City, UTAH USA P Ramesh MBBS DMRD DNB MNAMS FRCR Director, Liberty Scans Chennai, India Priya Narang MS Narang Eye Hospital Ahmedabad, Gujarat, India viii Manual of Neuro-ophthalmology Reena M Choudhry MD DO DNB FRCS Icare Eye Hospital and Postgraduate Institute Noida, Uttar Pradesh India Sameer Narang MS Narang Eye Hospital Ahmedabad, Gujarat India Saurabh Choudhry MD DO DNB Icare Eye Hospital and Postgraduate Institute Noida, Uttar Pradesh India S Soundari DO DNB FRCS Consultant Ophthalmologist Dr. Agarwal’s Eye Hospital 19, Cathedral Road Chennai India