Vet. World, 2012, Vol.5(4): 236-237 CLINICAL Eye Worm infection in a Cattle- A Case Report

The genus Thelazia (Spirurida, Thelaziidae) Primarily the eye worm was removed surgically includes a cosmopolitan group of eye worm spirurids according to the standard procedures after instillation responsible for ocular infections in domestic and wild of a local anesthetic in the left eye. The eye was thoroughly irrigated with aqueous solution of Boric animals and transmitted by different species of muscids. powder. Concurrent use of Ciplox-D (Ciprofloxacin Eye worms (Thelazia spp) are common parasites of and dexamethasone) eye drops every 8 hours for 5 cattle and horses in many countries. Cattle are infected days was recommended for the suppression of primarily by T gulosa, T skrjabini, and T rhodesii; the inflammation and secondary bacterial infections. latter is the most common and harmful to cattle in Ivermectin was injected subcutaneously @ 0.2mg/Kg many countries. Horses are infected mainly by T. body weight. Animal was recovered completely. lacrymalis. These worms live in the conjunctival sac (eyelid) of the eye in many species of livestock. The Discussion worms are up to 2cm long and are thin and white. One Feeding habits of the face flies, Musca larvipara or both eyes may be affected. Upto 90 parasites have and Musca convexifrons include a preference for been found in one eye (Soulsby, 1982). Infections may ocular secretions, which is ideal for transmission. The be found year-round, but clinical disease outbreaks, first larvae of T. rhodesii enter the gut of the fly and particularly in cattle, usually are associated with the penetrate the ovarian follicles, where they develop, warm season activities of the flies. The present paper becoming second larvae which grow and moult to deals with a case of an eye worm infection in cattle and become third larvae, infective larvae. The third larvae it's recovery. leave the ovarian follicles and migrate to mouthparts Case History of the fly, from which they are transferred to cattle (Klesov, 1950). Development of sexually mature A five year old cow and in second parity belonging worms takes about 1-4 weeks in cattle. Adult parasites to local farmer was presented to the Veterinary are found behind the nictitating membrane, on the Dispensary, Kolcharam, Medak dt. AndhraPradesh with surface of the conjunctiva and in lacrimal and naso the history of conjunctivitis, cloudiness and corneal lacrimal ducts. opacity in left eye. Further the anamnesis revealed that The worm has a rough cuticle (skin) that causes the animal was not respon-ding to the antibiotics. irritation and inflammation to the cornea. Invasion of Clinical observations the lacrimal gland and excretory ducts may cause The animal was dull, depressed and anorectic inflammation and necrotic exudation. Mild to severe with severe conjunctivitis, conjunctival edema in left conjunctivitis and blepharitis are common. cornea may get inflamed, ulcerated, perforated and if un eye. Vital signs like body temperature, pulse and attended, may get fibrosed at a later stage, particularly respiration were within normal range. On detailed clinical examination an eye worm (Thelazia sps) was with T. rhodesii infection in cattle. seen wriggling in the eye with vigorous movement. Certain systemic anthelmintics were found Vet. World, 2012, Vol.5(4): 236-237 CLINICAL


Introduction Treatment
The genus Thelazia (Spirurida, Thelaziidae) Primarily the eye worm was removed surgically includes a cosmopolitan group of eye worm spirurids according to the standard procedures after instillation responsible for ocular infections in domestic and wild of a local anesthetic in the left eye.The eye was thoroughly irrigated with aqueous solution of Boric animals and transmitted by different species of muscids.
powder.Concurrent use of Ciplox-D (Ciprofloxacin Eye worms (Thelazia spp) are common parasites of and dexamethasone) eye drops every 8 hours for 5 cattle and horses in many countries.Cattle are infected days was recommended for the suppression of primarily by T gulosa, T skrjabini, and T rhodesii; the inflammation and secondary bacterial infections.latter is the most common and harmful to cattle in Ivermectin was injected subcutaneously @ 0.2mg/Kg many countries.Horses are infected mainly by T. body weight.Animal was recovered completely.lacrymalis.These worms live in the conjunctival sac (eyelid) of the eye in many species of livestock.The Discussion worms are up to 2cm long and are thin and white.One Feeding habits of the face flies, Musca larvipara or both eyes may be affected.Upto 90 parasites have and Musca convexifrons include a preference for been found in one eye (Soulsby, 1982).Infections may ocular secretions, which is ideal for transmission.The be found year-round, but clinical disease outbreaks, first larvae of T. rhodesii enter the gut of the fly and particularly in cattle, usually are associated with the penetrate the ovarian follicles, where they develop, warm season activities of the flies.The present paper becoming second larvae which grow and moult to deals with a case of an eye worm infection in cattle and become third larvae, infective larvae.The third larvae it's recovery.
leave the ovarian follicles and migrate to mouthparts Case History of the fly, from which they are transferred to cattle (Klesov, 1950).Development of sexually mature A five year old cow and in second parity belonging worms takes about 1-4 weeks in cattle.Adult parasites to local farmer was presented to the Veterinary are found behind the nictitating membrane, on the Dispensary, Kolcharam, Medak dt.AndhraPradesh with surface of the conjunctiva and in lacrimal and naso the history of conjunctivitis, cloudiness and corneal lacrimal ducts.opacity in left eye.Further the anamnesis revealed that The worm has a rough cuticle (skin) that causes the animal was not respon-ding to the antibiotics.
irritation and inflammation to the cornea.Invasion of

Clinical observations
the lacrimal gland and excretory ducts may cause The animal was dull, depressed and anorectic inflammation and necrotic exudation.Mild to severe with severe conjunctivitis, conjunctival edema in left conjunctivitis and blepharitis are common.cornea may get inflamed, ulcerated, perforated and if un eye.Vital signs like body temperature, pulse and attended, may get fibrosed at a later stage, particularly respiration were within normal range.On detailed clinical examination an eye worm (Thelazia sps) was with T. rhodesii infection in cattle.seen wriggling in the eye with vigorous movement.