👉 Unifocal refers to a vision system that is capable of focusing on both near and far objects simultaneously. This means that an individual's eye can see both distant and near objects at the same time, which is particularly useful for people who are visually impaired or have other conditions that affect their ability to focus. The term "unifocal" was first used in the 1930s by physicist Edward Wilson, but it has since been widely recognized as a term with a specific meaning and
