2nd Edition

Ophthalmology for the Equine Practitioner, Second Edition (Book+CD)

By Dennis Brooks Copyright 2008
    170 Pages
    by Teton NewMedia

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    This is a useful field guide meant to help veterinarians treat simple and complex eye problems in horses. The book is to the point and focuses on salient clinical facts, covering the most common medical and surgical ophthalmic problems encountered in an equine clinic. The book is laid out in anatomical order making it easy to locate specific information.

    The sections include General anatomy and physiology of the horse eye, Examination of the eye of the horse, The equine orbit, Eyelids, conjunctiva, nictitans and nasolacrimal system, Corneal ulceration, Other corneal problems, Cataracts, glaucoma and uveal tract disease, Retinopathies, and Lavage treatment systems. Within each section there is a logical guidance to the diagnosis and management of common clinical problems. A short but highly informative section on vision in the horse is particularly valuable for the practitioner.

    This portable resource for the non-specialist provides clear guidelines for evaluation, diagnosis, and management of medical and surgical problems. The accompanying CD contains 29 video clips of 40 minute duration covering diagnostic and surgical procedures. Among the videos are the information of tonometry, cataract surgery, orbital blocks, equine recurrent uveitis, retinal detachment, and ketatoplasty.

    Published by Teton New Media in the USA and distributed by Manson Publishing outside of North America.


    Section 1 General Anatomy and Physiology of the Horse Eye
    Introduction 3
    Some Helpful Hints 3
    Orbit 4
    Eyelids 6
    Nictitans 8
    Conjunctiva 8
    Anterior Segment 8
    Precorneal Tear Film 8
    Cornea, Limbus, Sclera 9
    Iridocorneal Angle 11
    Uvea 11
    Iris 11
    Pupil 12
    Ciliary Body 13
    Choroid 13
    Lens 13
    Posterior Segment 14
    Vitreous Chamber 14
    Retina 14
    Optic Nerve 15

    Section 2 Examination of the Eye of the Horse
    History 18
    Ophthalmic Examination 18
    Reflex Testing 18
    Diagnostic Testing 19
    What does the Horse See? Visual Capabilities of the Horse 33
    Ocular Problems in the Foal 36

    Section 3 The Equine Orbit
    Orbital Diagnostic Techniques 48
    Orbital Trauma, Contusion and Periorbital Fractures 50
    Foreign Bodies can lead to Orbital Abscesses 52
    Orbital Tumors 52
    Suture Line Periostitis 54
    Treatment of Equine Orbital Disease 54

    Section 4 The Eyelids, Conjunctiva and Lacrimal System
    Traumatic Eyelid Lacerations 60
    Neoplasia of the Lids 65
    The Conjunctiva 72
    Nictitans 76
    The Nasolacrimal System 77
    Keratoconjunctivitis Sicca (KCS) 78
    Dacryocystitis 79

    Section 5 Corneal Ulceration
    Corneal Ulceration 86
    Proteinases in the Tear Film 112
    Corneal Sensitivity in Foals and Adult Horses 113
    Corneal Healing in the Horse 114
    The Equine Corneal Microenvironment 115
    Medical Therapy 118
    Antibiotics 119
    Collagenolysis Prevention 119
    Treat Uveitis 120
    Adjunctive Surgical Therapy 120
    **Important Concepts** 127
    Corneal Lacerations/Perforations 128
    Fungal Ulcers in Horses 130
    Iris Prolapse in the Horse 131
    Corneal Stromal Abscesses 132

    Section 6 Other Corneal Problems
    Corneal Edema 154
    Squamous Cell Carcinoma and other Corneal Tumors 154
    Corneal Foreign Bodies 156
    Endothelial Detachment following Blunt Trauma 158
    Nonulcerative Keratouveitis (NKU) 158
    Nonulcerative Interstitial Keratitis (NIK) 158
    Eosinophilic Keratoconjunctivitis 160
    Herpes and Viral Keratitis 162
    Burdock Pappus Bristle Keratopathy 164
    Calcific Band Keratopathy 164

    Section 7 Cataracts, Glaucoma and Uveal Problems in the Horse
    Cataracts 170
    Equine Cataract Surgery 175
    Extracapsular Cataract Surgery 175
    Phacoemulsification Cataract Surgery 175
    Intracapsular Cataract Surgery 179
    Postoperative Cataract Surgery Therapy and Results 179
    Aphakic Vision in Horses 180
    Equine Glaucomas 181
    Contraindications/Possible Interactions 189
    Tips on Tonometry for Evaluation of Intraocular Pressure (IOP) in Horses 189
    The Uveal Tract 190
    Heterochromia Iridis 190
    Aniridia/Iris Hypoplasia/Enlarged Corpora Nigra/Iris Colobomas 191
    Iris and Ciliary Body Cysts 191
    Equine Recurrent Uveitis (Periodic Ophthalmia, Moon Blindness, Iridocyclitis 192
    ERU Therapy 200
    Some Horses require Life-Long Therapy! 200
    Alternative Therapy for ERU 203
    Surgical considerations for ERU 203

    Section 8 Retinopathies and Ocular Manifestations of Systemic Diseases in the Horse
    Retinopathies 208
    Chorioretinitis 208
    Congenital Stationary Night Blindness 211
    Equine Motor Neuron Disease Retinopathy 211
    Retinal Detachments 211
    Optic Neuropathies 213
    Bacterial Infections 219
    Viral Infections 221
    Chlamydial Infections 223
    Fungal Infections 223
    Protozoan Infections 224
    Neoplasia 224
    Unknowns 225
    Eye Diseases associated with Specific Horse Breeds 226
    Links 229
    Electroretinography 229
    Lavage Treatment Systems 231
    Glossary of Selected Veterinary Ophthalmic Terms 232
    Treatment Plans/Practice Tips 240
    Index 255