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The document discusses optical formulas related to the eye. It provides equations for the power of a lens (P), the reciprocal of focal length (1/f) in terms of the reciprocal of distance to near (1/s) and far (1/s') objects. It also gives equations for the reciprocal of power (1/P) and accommodation (S') of the eye in different optical states like myopia, hypermetropia and accommodation.
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- 1. 1/f=1/s+1/s P = 1/ +1/-r P =-1/r 1/f=1/s+1/s P = 1/0,25+1/-p P =4-1/p Mata berakomodasi maksimum S = -p Mata tidak berakomodasi S = -f Mata berakomodasi S = -x