What do you think of this optometry table? How is your eyesight? What is the pupil distance?

300-degree myopia of the right eye plus 175-degree astigmatism (the axial position of astigmatism is 1) is corrected to 1.0 (that is, 5.0 of the current standard vision comparison table); The myopia of the left eye is 275 degrees, and the astigmatism is 200 degrees, which is corrected to 1.0 (the axial position of astigmatism is179); The pupillary distance of hyperopia is 66 mm, and that of myopia is 63 mm.

The total prescription of glasses contains information such as spherical lens power, cylindrical lens power, axial position of cylindrical lens, pupil distance and so on. In the prescription of glasses, spherical lenses are represented by S, cylindrical lenses by C, doctors represent degrees by diopters, and the symbol is D. 1D is equivalent to the usual 100 degree. Myopia and hyperopia are only expressed by degrees, while astigmatism needs a data reflecting position, which is expressed by degrees of a circle. Myopia is indicated by minus sign "-",while hyperopia is indicated by plus sign "+". Pupillary distance refers to the distance between the pupils of both eyes. For example-1.25DS? -1.00 DC × 90, 1.0, that is to say, the spectacle power of the patient is 125, the myopic astigmatism is 100, the axial position is 90, and the corrected visual acuity can reach 1.0.

In a person's life, the degree of eyeball will change, even with glasses, it needs to be checked regularly.