Blepharitis, or eyelid inflammation, one of the most common problems, is characterized by erythematous eyelids with accumulation of debris along the eyelid margin. Malignant eyelid tumors may be associated with lash loss and erosion of normal eyelid structures.
Moon phases depend on the position of both the Sun and Moon with respect to the Earth. The 4 primary phases of the Moon are: new, first quarter, full and third quarter.
1 A crescent moon in the shape of a C is waxing. 2  A half or gibbous moon in the shape of a backwards D is waxing. 3  A moon in the shape of an O is full. 4  A half or gibbous moon in the shape of a D is waning.  A crescent moon in the shape of a backwards C is waning.