What does vision test s mean? In medicine, S usually stands for Snellen's Chart, an eye test chart designed to test for farsightedness, which is essentially a visual aid. The doctor will ask the patient to sit at a certain distance, have the patient look toward the chart, and read the rows of letters or numbers one by one to determine the patient's vision. This process is called a vision exam.
Why do you need a vision test?A vision test is a routine physical examination that helps doctors detect eye diseases and some vision problems such as nearsightedness, farsightedness, astigmatism, and presbyopia. In addition, vision screening can help doctors detect and treat serious diseases such as glaucoma, vitreous clouding and macular degeneration. Therefore, it is very important and meaningful to have a vision examination.
How to do a vision checkup s?Vision checkups usually require specialized medical equipment and techniques, so it is recommended that they be done by visiting a doctor or a professional vision checkup facility. Patients need to be fitted with appropriate glasses or contact lenses to maximize vision in both eyes. If the patient has any eye disease, eye pain or eye infection, the patient should tell the doctor beforehand so that the doctor can take appropriate measures to ensure that the vision check is safe and accurate.