NURS 612 Nose, ears & throat 2022 update
Maryville University Of St. Louis
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NURS 612 Nose, ears & throat 2022 Update
What is accommodation? 
	The ability of the eye to change its focus from distant to near objects (and vice versa). This process is achieved by the lens changing its shape. It is the process of adjusting the focal length of a lens. 
Most common cause of loss of vision in adults > 45 years old: Presbyopia 
What does 20/40 mean? 
	The pt sees at 20 feet what a normal person sees at 40 feet. Another way of saying this is that a person with 20/40 vision has vision that is only half as good as norm...