In ancient times, a ring was used to seal a promise, much in the same way rings of different types are used to symbolize promises today. Bishops would wear rings to symbolize their spiritual âmarriageâ or union with the church.
What is Extina? Extina (ketoconazole) is an antifungal medication that prevents fungus from growing on your skin. Extina Foam is used on the skin (topical) to treat a skin condition called seborrheic dermatitis in patients 12 years of age and older. Seborrheic dermatitis can cause areas of flaky skin (scales) on the scalp, face, ears, chest or upper back.
The retina is an extremely complex tissue that converts the light image entering the eye into a neural signal. This signal is then transmitted to the brain by extensions of the ganglion cells. It is the extensions of these cells that form the optic nerve so, in a sense, the optic nerve is an extension of the retina.