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*'''For more information on the snake eye, see''' [[Snake Eye|here]]
*'''For more information on the snake eye, see''' [[Snake Eye|here]]
==Examination==
==Examination==
Bulging spectacles are a common presenting complaint in snakes. The cause may either be a subspectacular infection or impaired tear drainage. On physical examination the subspectacular fluid tends to be clear when there is impaired drainage. If the fluid is not clear an infectious process should be suspected. The vascularity is not usually evident in the normal spectacle. When there is distension of the spectacle the vessels may become engorged and easily visualised with an ophthalmoscope.
Bulging spectacles are a common presenting complaint in snakes. The cause may either be a subspectacular infection or impaired tear drainage. On physical examination, the subspectacular fluid tends to be clear when there is impaired drainage. If the fluid is not clear, an infectious process should be suspected. The vascularity is not usually evident in the normal spectacle. When there is distension of the spectacle the vessels may become engorged and easily visualised with an ophthalmoscope.
*For more information on snake physical examinations, [[Snake Physical Examination|see here]]
*For more information on snake physical examinations, [[Snake Physical Examination|see here]]
==Diagnosis==
==Diagnosis==
A bulging spectacle can be investigated by the insertion of a small gauge needle through the lateral canthus into the subspectacular space. Paracentesis of some fluid is followed by the injection of a small amount of fluorescein dye. The mouth is then examined with the aid of an ultraviolet light. In cases of bullous spectaculopathies there will be no fluorescence in the mouth. The tear sample can be submitted for microscopy, culture and sensitivity.
A bulging spectacle can be investigated by the insertion of a small gauge needle through the lateral canthus into the subspectacular space. Paracentesis of some fluid is followed by the injection of a small amount of fluorescein dye. The mouth is then examined with the aid of an ultraviolet light. In cases of bullous spectaculopathies there will be no fluorescence in the mouth. The tear sample can be submitted for microscopy, culture and sensitivity.