A person's prescription for her new bifocal glasses calls for the refractive power of -0.500 diopters in the distance-vision part and a power of around 1.90 diopters in the close-vision part. Find out the near and far points of uncorrected vision of the person? Suppose that the glasses are 2.00 from the person's eyes and that the person's near-point distance is around 25.0 if wearing the glasses.