Page 2777 - Cote clinical veterinary advisor dogs and cats 4th

Red Eye, Acute 1447

Red Eye, Acute
VetBooks.ir Acute red eye

Yes
Exophthalmos Orbital disease
No
Schirmer tear test (STT)

Normal or increased Decreased
( 15 mm/min) ( 10 mm wetting/min)

Fluorescein stain Keratoconjunctivitis
sicca (KCS)
Positive Negative

Corneal Intraocular pressure
ulceration (IOP)

Decreased Normal Increased
10 mm Hg 15-25 mm Hg 30 mm Hg
Uveitis Corneal discoloration Glaucoma

Yes No

Nonulcerative keratitis Conjunctivitis
See: Blepharitis
• Corneal vascularization, p. 212
• Corneal pigmentation, p. 206
• Corneal lipid infiltrates, p. 205
• Episcleritis/scleritis, p. 304

Note: STT values 10 but 15 mm wetting/minute may be normal or indicative of early KCS; IOPs between 10-15 and 25-30 mm Hg may
be normal for some animals (interpret STT values and IOPs in light of other ophthalmic findings).
EDITED BY: Leah A. Cohn, DVM, PhD, DACVIM
ORIGINALLY WRITTEN BY: Cheryl L. Cullen, DVM, MVetSc, DACVO

Clinical Algorithms

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