PULSED NONLINEAR AUTOMATIC CONTROL SYSTEM FOR GUIDANCE OF A CATERPILLAR TRACTOR UNIT IN VINEYARDS




Refractive behavior changes with six months daily wear of high and low oxygen permeability hydrogel contact lenses

Introduction: The investigation of myopia and soft contact lenses is not new.Many reports show that the wearing of silicone hydrogel c12a microphone lenses as opposed to conventional disposable hydrogel lenses results in little progression of myopia in the eyes wearing silicone hydrogels.Method: Six subjects wore a silicone hydro-gel lens on one ey

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