Most of us will agree that the abilities to see, hear, taste, perceive touch, and smell are pretty important. Without the ability to smell, food would have little, if any, taste. The sense of touch lets us know when we experience something pleasurable or are injured. But of all the senses, the abilities to see and hear are considered most important because they keep us most informed about the world around us. This chapter reviews problems affecting vision and hearing.
Before discussing the various disorders of the eyes, it is important that you understand the anatomical structure of the eye. Figure 8.1 offers an illustration for reference.