4.0 How many degrees is your eyesight?

4.0

Visual acuity refers to the current visual acuity obtained when testing the visual acuity of the center. It is not the same concept as the eye power. The eye power refers to the refractive power of the eye obtained after the instrument refraction. 4.0 Visual acuity patients may be nearsighted, hyperopic, or even accompanied by astigmatism symptoms, so the two cannot be converted to each other.

If the patient wants to know his refractive power or wants to get glasses, it is recommended to go to a regular eye hospital for refraction to clarify his refractive power.