A parent calls the school nurse with questions regarding the recent school vision screening.Snellen chart examination revealed 20/60 for both eyes.Considering the visual acuity results,the nurse informs the parent that the child

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Normal vision is 20/20.The larger the denominator,the poorer the patient's visual acuity.For example,a value of 20/60 means that the patient,when standing 20 feet away,can read a line that a person with normal vision can read from 60 feet away.Strabismus is a (congenital)condition in which both eyes do not focus on an object simultaneously: These eyes appear crossed.Acuity may not be affected.Presbyopia is impaired near vision that occurs in middle-aged and older adults and is caused by loss of elasticity of the lens.Cataracts develop slowly and progressively after age 35 or suddenly after trauma.

A Parent Calls the School Nurse with Questions Regarding the Recent