Page 1337 - Problem-Based Feline Medicine

65 – THE CAT WITH ABNORMAL EYELID APPEARANCE 1329

Classical signs—Cont’d Irritation from the cilia may cause increased lacrima-
tion and occasionally signs of corneal irritation, such as
● Cicatricial scarring from previous injury. ulcerative or non-ulcerative keratitis, vascularization of
● Rare. the cornea or even corneal sequestration.

Rare in cats.
Clinical signs
Rare in cats. Diagnosis
Eyelid margin is rolled outwards, making bulbar con- Diagnosis is based on the detection of the fine cilia
junctiva more visible. extending from the meibomian gland openings.
Magnification and bright illumination will facilitate
Usually it is caused by former injury. If the eyelid is
detection against a white scleral background.
examined carefully, signs of previous injury will be
identified by cicatricial scarring causing the roll-out.
This will make manual correction of the ectropion by
PARASITIC MYIASIS
lid tensioning at the time of examination difficult.
Classical signs
Diagnosis
● Discharging fistulous opening onto the
Diagnosis is based on the characteristic appearance of face.
a fixed ectropion with scarring. ● Fly larvae visible in wound.

DISTICHIASIS

Clinical signs
Classical signs
● Cilia extending from meibomian gland Discharging wound which may involve the eyelid.
openings at the eyelid margin. Usually fly larvae are visible inside a discharging fistu-
● ± Ocular irritation with lacrimation. lous opening.
● Rare in cats.

Clinical signs Diagnosis
Cilia are present extending from meibomian gland Diagnosis is based on the appearance of the fly larvae
openings at the eyelid margin. (maggots) in a discharging wound.

RECOMMENDED READING
Doherty M. A bridge flap blepharorrhaphy method of lower eyelid reconstruction in the cat. J Am Anim Hosp Assoc
1973; 9: 238.
Pavletic MM. Mucocutaneous subdermal plexus flap from the lip for lower eyelid restoration in the dog. J Am Vet
Med Assoc 1982; 180: 921.
Scagliotti R. Comparative neuro-ophthalmology. In: Gelatt KN (ed) Veterinary Ophthalmology, 3rd edn. Baltimore,
Maryland, Lippincott, Williams & Wilkins, 1999, pages 1362–1366.
Wolfer JC. Correction of eyelid coloboma in four cats using subdermal collagen and a modified Stades technique.
Vet Ophth 2002; 5: 269–272.