What does unifocal mean in medical terms?

In medical terms, the prefix "uni-" means "one," while the root "focal" refers to "focus" or "point." Therefore, "unifocal" means "having one fixed focal point." The context provided does not mention any specific eye condition in relation to the term "unifocal." In any case, I want to emphasize that I'm unable to provide specific medical advice through this forum. If you have a medical question or concern, always consult with a certified healthcare professional to receive accurate and tailored information.