Refractive spherical lenses are lenses used to correct myopia and hyperopia.
Refractive spherical lenses are often represented as DS in vision test results, where a “+” in front of the test result indicates the presence of hyperopia in the examined person, and a “-” in front of the test result indicates the presence of myopia in the patient.
Common classifications of refractive spherical lenses include convex and concave lenses, where convex lenses are used to correct farsightedness and concave lenses are used to correct nearsightedness. In addition to refractive spherical lenses, there are also common refractive cylindrical lenses, denoted by DC, which are mainly used to correct astigmatism.
It is recommended that patients with abnormal refractive test results should consult a doctor in time to assess their condition and under the guidance of a professional doctor, standardized diagnosis and treatment will be carried out to correct refractive errors and improve their vision.