Definition or overview
Ophthalmomyasis interna refers to the presence of dipterous fly larvae in the eye

Etiology
Ophthalmomyasis is caused by the sheep nasal botfly (Oestrus Ovis) and the catlle warble fly (hypoderma bovis). Larvae gain access to the eye via the blood or by direct migration through the eye.

Clinical presentation
Anterior uveitis and RDs may also occur with Ophthalmomyasis. Cats are more commonly affected than dogs. The presence of arcuate or linear depigmented areas in the tapetal and non tapetal fundus may be due, degenerative, or inflammatory disease of the RPE. Clinical finding are usually incidental.

Diagnosis
Ophthalmomyasis is evident as curvilinear track of retinal hemorraghe in dogs and cats. Larvae may be floating in the vitreous.

Management
Most cases are incidental findings and require no therapy.