الفهرس 
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Abstract
The first part of this thesis is a review of the ophthalmic literature as regards the aetiology and management of concomitant squint. It begins with a chapter on the anatomy of the Extra Ocular Muscles followed by one on the Binocular vision then another chapter on the different theories in the causation of concomitant squint.
The ophthalmic review includes different ways for the management of concomitant squint. They start with the different lines of treatment of amblyopia as separate entity. The treatment of concomitant squint itself includes multiple ways either; drug therapy, optical treatment, surgical correction or orthoptic training.
The second part of this thesis includes a clinical study of 50 patients of concomitant squint from those attending the ophthalmic out—patient clinic of Zagazig University Hospital. This study includes full history of the patient, family history, routine ophthalmic examination and examination of squint. The later includes, visual acuity, nature of squint, angle of squint, refraction, fundus examination, type of fixation and the assessment of binocular function.
This study also includes the different lines of treatment of concomitant squint. It starts with treatment of Amblyopia with occlusion, either occlusion of the non—squinting eye (conventional occlusion) or occlusion of the squinting eye (inverse occlusion). It was noticed that conventional occlusion was better than inverse occlusion in treatment of strabisruic arublyopia.
The different lines of treatment of concomitant squint were tried in this clinical study. Classes were tried in all of them except those of very young age or those of non—improved amblyopia. Classes were of value in treatment of accommodative type. The patients who were too young for glasses were given ndotics which were effective in small angle accommodative squint. Surgical treatment was needed for cases of non—improved amblyopia (as a cosmetic correction) and the partly or non— accommodative squinters, and also for some cases of large angle accommodative type. All the cases were aligned surgically although some of them needed more than one sitting.
Orthoptic training proved to be of value in restoration of binocular function and in maintaince of fusion particularly in patients who were not too young for training and not too old for restoration of binocular single vision.