Ophthalmic examination in dogs and cats. Part II.


E. SCOUNTZOU (E. ΣΚΟΥΝΤΖΟΥ)
Abstract

This is the second part of a review paper on the ophthalmic examination in dogs and cats. Ocular examination is an important aspect of the complete physical examination process; therefore, routine practice of an ophthalmic examination protocol enables the clinician to catalogue his findings and conclude to a diagnosis. Although the eye is a unique and highly complex organ in terms of structure and function, it should never be viewed and examined as an isolated organ, but rather than as a part of the whole, since a great number of systemic diseases reflect on to the eyes. A correct diagnosis in veterinary ophthalmology is often based on anatomical observations and the use of various simple additional ophthalmologic techniques. These may be easily learnt and applied in veterinary practice. The use of these techniques would assist the clinician in establishing a diagnosis and developing a rational treatment. Thorough and systematic ophthalmic examination includes: (i) accurate case history evaluation (signalment and primary complaint), (ii) eye and annexa examination in a lighted room by means of initial observation and close-up inspection, palpation (consisting of exploring the boundaries of the orbit, digital tonometry, eyelid eversion and globe retro pulse) and neuroophthalmologic assessment (including menace response, papillary light reflexes, corneal, oculocephalic and oculocardiac reflex),) (iii) detailed examination of the external (globe, eyelids and margins, nictitating membrane, conjunctiva, sclera, lacrimal system) and internal (cornea, anterior chamber, iris and pupil, lens, vitreous body, choroid and retina, optic nerve) ocular structures of both eyes, working from anterior to posterior, in a dark room, (iv) tear film production measurement (Schirmer Tear Test), (v) vital dyes use (fluorescein and Rose-Bengal stain), (vi) corneal and conjunctival scrapings (impression smears for exfoliative cytology), collection of specimens for microbiological examination, as well as of aspirates (aqueous humor from the anterior chamber or vitreous paracentesis from the posterior chamber), (vii) tonometry (digital, indentation or applanation), (viii) evaluation of the nasolacrimal drainage apparatus, (ix) ophthalmoscopy (direct or indirect) and (x) vision testing (based on menace reaction, moving objects, obstacle course and visual field evaluation).

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Riferimenti bibliografici
Μιχαήλ ΣΓ (1975) Συγκριτική Ανατομική των Κατοικίδιων Θηλαστικών. Θεσσαλονίκη
Barnett KC (1994) The canine ocular fundus: normal variations. Comp Cont Educ Pract, 16:348-356
Barnett KC, Crispin SM (1998) Feline Ophthalmology. Saunders, Philadelphia
Brooks DE (1990) Glaucoma in the dog and cat. Vet Clin Ν Am Small, 20:775-797
Cottrell BD, Petersen-Jones SM (1993) Special examination techniques. In: Petersen-Jones SM, Crispin SM (eds) Manual of Small Animal Ophthalmology. BSAVA, London, 27-43
Dean E (1997) Techniques d'examen de Γ oeil. Prat Med Chir Anim Comp,32(Suppl4):21-38
DeLaHunta A (1989) Neuro-Ophthalmology. In: Ettinger SJ (ed.) Textbook of Veterinary Internal Medicine. 3rd ed, WB Saunders, Philadelphia, 702-707
Desbrosse AM (1989) L' examen clinique de Γ oeil. Reel Med Vet, 165:187-198
Gelati KN (1991) Ophthalmic examination and diagnostic procedures. In: Gelati KN (ed) Veterinary Ophthalmology. 2nd ed, Lea and Febiger, Philadelphia, 195-235
Gelati KN (2000). Essentials of Veterinary Ophthalmology. Lippincott / Williams & Wilkins, Philadelphia.
Habin D (1993) The nasolacrimal system. In: etersen-Jones SM, Crispin SM (eds) Manual of Small Animal Ophthalmology. BSAVA, London, 91-102
Hacker D (1989) Diagnostics. In: Peiffer RL Jr, Petersen-Jones SM (eds) Small Animal Ophthalmology: a Problem-Oriented Approach. Saunders, Philadelphia, 11-23
Helper LC (1989) Magrane's Canine Ophthalmology. 4th ed, Lea and Febiger, Philadelphia.
Mould JRB (1993) Approach to an ophthalmic examination. In: Petersen-Jones SM, Crispin SM (eds) Manual of Small Animal Ophthalmology. BSAVA, London, 11-25
Narfstrom K, Bjerkas E, Ekesten Β (1997) Visual impairment. In: Peiffer RL Jr, Petersen-Jones SM (eds) Small Animal Ophthalmology: a Problem-Oriented Approach. 2nd ed, Saunders, Philadelphia, 85-165
Peruccio C, Pizzirani S, Peiffer RL Jr (1997). Diagnostics. In: Peiffer RL Jr, Petersen-Jones SM (eds) Small Animal Ophthalmology: a Problem-Oriented Approach. 2nd ed, Saunders, Philadelphia, 13-26
Powell CC, Lappin MR (2001a) Clinical ocular toxoplasmosis in neonatal kittens. Vet Ophthalmol, 4:87-92
Powell CC, Lappin MR (200Iß) Causes of feline uveitis. Comp Cont EducPract, 23:128-140
Powell CC, Lappin MR (2001γ). Diagnosis and treatment of feline uveitis. Comp Cont Educ Pract, 23:258-266
Slatter D (1990) Fundamentals of Veterinary Ophthalmology. 2nd ed, Saunders, Philadelphia.
Wyman M (1986) Manual of Small Animal Ophthalmology. Churchill Livingstone, New York.
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