Normal eye – Emetropia (lat. Emetropia)
Emmetropia or normal-sighted eye means the refractive state of the eye in which the far point (Punctum remotum) is at infinity, the point of the clearest vision at a distance. In an emmetropic person, the image of the observed object is projected directly onto the...
Astigmatism (lat. Astigmatismus)
The word astigmatism (lat. Astigmatismus) means without a point. Astigmatism is an eye error in which the optical system of the eye has different refractive powers in different meridians. Astigmatism is an eye error in which the optical system of the eye has different...
Farsightedness (lat. Hypermetropia)
The word hypermetropia (lat. Hypermetropia ) consists of two words: hyper – over, over, and metropia – looking to measure. Hypermetropia, farsightedness, is a refractive anomaly (error of the eye) due to which light rays focus behind the retina, therefore...
Myopia – myopia
The word myopia (lat. Myopia) means short vision and mouse hole, and the verb myein means to close the eyes. Myopia is a refractive anomaly (error of the eye) due to which light rays focus in front of the retina, therefore creating a blurred image of the observed...
