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.
Quarter Moon, captured by NASA astronauts. Image credit: NASA. You can have a first quarter moon, when the Moon is halfway between a new moon and full moon. A new moon occurs when the Moon is directly in between the Sun and the Earth. From that perspective, the illuminated Moon is facing away from the Earth.
This moon appears half-lit to us, and half moon is a beloved name (although not an official one). Still, itâs good to recall that the illuminated portion of a first quarter moon truly is just a quarter. On the night of first quarter moon, we see half the moonâs day side, or a true quarter of the moon. Another lighted quarter of the moon shines just as brightly in the direction opposite Earth! A first quarter moon rises at noon and is high overhead at sunset. It sets around midnight. First quarter moon comes a week after new moon. Now, as seen from above, the moon in its orbit around Earth is at right angles to a line between the Earth and sun. As the moon orbits Earth, it changes phase in an orderly way. Follow these links to understand the various phases of the moon.