A 37-year-old male presented with gradually progressive nonaxial proptosis of 3-years duration (Fig. 1A). CT scan of the orbit revealed a frontal sinus mucocele with a single, deep anterior recess extending 1.5 cm above the supraorbital rim (Fig. 1B). The patient underwent anterior orbitotomy via eyelid crease approach, and the mucocele was exposed. A controlled drainage of the mucocele enabled removal of its thick secretions, and collapse of the mucosal wall lining the expanded sinus cavity. Ensuring complete removal of the mucosal wall was a challenge due to limited visualization and illumination into the roof of the sinus……