near point The nearest point at which the human eye can focus an object. As the lens becomes harder with age, the extent to which accommodation can bring a near object into focus decreases. Therefore with advancing age the near point recedes – a condition known as presbyopia.
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Near , near / ni(ə)r/ • adv. 1. at or to a short distance away; nearby: a bomb exploding somewhere near | [comparative] she took a step nearer. 2. a short t… point , point / point/ • n. 1. the tapered, sharp end of a tool, weapon, or other object: the point of his dagger a pencil point. ∎ Archaeol. a pointed flake… Locus , Locus A locus is a set of points that contains all the points, and only the points, that satisfy the condition, or conditions, required to describe a… Focus , fo·cus / ˈfōkəs/ • n. (pl. fo·cus·es or fo·ci / ˈfōˌsī; -ˌkī/ ) 1. the center of interest or activity: this generation has made the environment a foc… Accommodation , accommodation Optical instruments (such as microscopes, cameras, and some telescopes) work by passing light through the curved surfaces of lenses, wh… Point Pelee , Point Pelee (pē´lē), peninsula, c.10 mi (16 km) long, extending into W Lake Erie, S Ont., Canada, near Leamington. It is the southernmost part of the…
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