Both Uses of

perspective
in
Lord of the Flies

The beach between the palm terrace and the water was a thin stick, endless apparently, for to Ralph's left the perspectives of palm and beach and water drew to a point at infinity; and always, almost visible, was the heat.
p. 10.3 *

perspectives = views

The beach stretched away before them in a gentle curve till perspective drew it into one with the forest; for the day was not advanced enough to be obscured by the shifting veils of mirage.
p. 103.3

perspective = view (appearance from where looking)

Definitions:

(1) (perspective as in: Look at it from her perspective)
a particular way of seeing or thinking about things
(2) (perspective as in: Keep it in perspective)
a sensible view of a situation that considers its different parts in a balanced way
(3) (perspective as in: perspective in art)
giving a 2-dimensional picture a 3-dimensional appearance by making parts that are farther away look smaller than things that are close; or a picture drawn in such a manner
(4) (perspective as in: a perspective of the entire block)
a view -- often stressing that the view is different from a view from another location
(5) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

Less commonly, in classic literature, perspective glass or perspectives can refer to a small telescope. More specialized senses of perspective are found in geometry, sound engineering, and philosophy. Consult a comprehensive dictionary if you wish to see those. All the common senses have to do with the way something is viewed.