Emmetropia & Ametropia/ Different types of refractive errors/Myopia/ Hypermetropia/Astigmatism
2:38
YouTubeLet's learn optometry
Emmetropia & Ametropia/ Different types of refractive errors/Myopia/ Hypermetropia/Astigmatism
This video contains basic definitions about emmetropia, ametropia & presbyopia. Emmetropia is a normal refractive state of the eye. Ametropia is a refractive error of the eye. It includes myopia, hypermetropia and astigmatism. Presbyopia is not a refractive error. It occurs as a normal physiological process as we age and reduces the ...
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