If the power of a lens is - 4.0 D, then it means that the lens is a

power 4dAnyway coming to your question the requirement of +- 4D for a job means that the eyesht of an applicant should not exceed these values that is +4D and -4D and in otherUp the stakes with 4D Jackpot, an extension of the orinal 4D game with a multi million ringgit prize! 1. Pick two 4-dit numbers from 0000 to 9999, e.g. (1188, 2288), (3388, 2233), or (1338,