An ESL class is different because it often includes students who speak a variety of languages. The teacher must use techniques that all of these students will understand. Pictures are one of the most used tools because most children know, for example, what a dog, flower, or a car looks like.
Keratitis, the eye condition in which the cornea becomes inflamed, has many potential causes. Various types of infections, dry eyes, injury, and a large variety of underlying medical diseases may all lead to keratitis.Some cases of keratitis result from unknown factors.eratitis facts. 1  Keratitis is the medical term for inflammation of the cornea. 2  Keratitis has many causes, including infection, dry eyes, physical and chemical injury, and underlying medical diseases. 3  The diagnosis of keratitis can be confirmed by the use of a slit lamp.
Solar keratosis results from excessive exposure to ultraviolet light either from the sun or tanning beds, according to the Mayo Clinic. This excessive exposure interferes with the normal process of skin cell development, and causes discoloration and excess keratin buildup. These growths often appear as dry patches of skin. UV exposure also might influence development of sebhorreic keratosis.