How to treat ophthalmic optometry sheet?

On the optometry list, the naked eye vision is usually expressed by the number after "VA" or "BCVA" (best corrected vision), such as VA 0.8 or BCVA 1.0. This number represents the smallest font size that a person can see without any correction (such as glasses or contact lenses). For example, VA 0.8 means that a person can see letters 2.4 meters high at a distance of 6 meters, while VA 1.0 means that he can see smaller letters.

If there are values of "SPH" (spherical lens) and "CYL" (cylindrical lens) on the optometry sheet, there is astigmatism. The degree of spherical lens indicates a person's myopia or hyperopia, positive value indicates hyperopia, and negative value indicates myopia. The degree of cylindrical lens indicates the degree and direction of astigmatism, positive value indicates that the direction of astigmatism is in the horizontal direction, negative value indicates that it is in the vertical direction, and numerical value indicates the degree of astigmatism.

Through these values, ophthalmologists can evaluate a person's vision problems and correct them as needed. Therefore, if you have any vision problems or doubts, you'd better consult a professional ophthalmologist or optometrist for more accurate diagnosis and treatment suggestions.