25/8/21 / means you have good visual acuity, but other factors contribute to the overall quality of vision Contrast sensitivity is the ability to distinguish between light and dark For example, being able to locate a dark object against a similarly colored backgroundIt indicates that you see things from feet away that the majority of people can view at a distance of 30 feet This means your eyesight is below par, and you might need vision correction According to the American Optometric Association (AOA), /30 vision can indicate low vision in some cases If, when you put on your prescription glassesBelow is a typical eyeglass prescription A contact lens prescription may be similar with additional measurements Sphere Cylinder Axis OD(Right Eye) 425 150 80 OS(Left Eye) 450 100 80 The first number (Sphere) is your refractive error, measured in diopters A minus sign () in front of your sphere number indicates nearsightedness A plus sign () before this number indicates
Low Vision Causes Treatments And Low Vision Aids
