Abstract: An ocular endoscope having a minimum cross-section and designed primarily for use in treating, diagnosing and investigating problems associated with the eye. The probe associated with the endoscope comprises a first bundle of fiber optics carrying light for illumination, a second coaxial bundle of fiber optics terminating in a lens and adapted to view areas being illuminated completely surrounded by a plastic sheath that is semi-rigid and malleable and capable of assuming and holding a preferred shape. In the preferred embodiment a cross-sectional area is elliptical and the sheath contains a port in the area of maximum curvature, which port is adapted to receive a probe. The probe is preferably malleable and may be hollow for accepting instruments or fiber optics connected to an external source of coherent light in the form of a laser for treating purposes.