Examlex
According to Piaget, a child who is unable to use symbols to help solve problems mentally is in the preoperational stage of development.
Hyperopia
A visual condition in which distant objects are seen more clearly than those that are near, often referred to as farsightedness.
Old Eyes
A colloquial term referring to age-related changes in vision, typically presbyopia or decreased visual acuity.
Myopia
A vision condition characterized by difficulty seeing distant objects clearly, commonly referred to as nearsightedness.
Presbyopia
A common age-related condition where the eye's lens loses the ability to focus clearly on close objects, typically starting in middle age.
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