Yksivahvuuslinssit
Yksivahvuuslinssit, also known as single vision lenses, are the most common type of prescription eyewear. They are designed to correct vision at one specific focal distance. This means that a single vision lens has one prescription power across its entire surface. People who need single vision lenses typically have a refractive error such as myopia (nearsightedness), hyperopia (farsightedness), or astigmatism, and their vision is blurry at a particular distance.
These lenses are manufactured to address a single vision problem, whether it's seeing clearly up close, far