What is the cause of presbyopia?  Presbyopia occurs as the eye ages naturally, usually starting at the age of 40 or older: the lens loses elasticity and therefore cannot focus correctly and clearly on objects at different distances. This makes reading, especially close reading, more difficult.

What method can treat presbyopia? Patients with presbyopia (who do not have other visual problems such as nearsightedness or hyperopia) can usually use single focus lenses to observe objects at close or distant distances, thereby obtaining optimal vision. However, for presbyopia patients with myopia or hyperopia who wear glasses, zoom lens lenses are usually a viable option: These prescription glasses have different intensity correction areas, so they can present a clear image at all distances, no matter how close or far. Multifocal contact lenses and/or zoom lenses can be used to correct presbyopia. Your optometrist can perform a vision test for you to quickly understand whether you have presbyopia, and provide you with glasses or contact lenses for vision correction.

What are the symptoms of presbyopia? Reading small characters is a challenge, and the text can only be seen from a distance. When the light is poor, reading becomes very difficult, symbols and text on the smartphone screen appear blurred, and it becomes increasingly difficult to switch vision between near and distant objects. Although the symptoms of presbyopia are similar to those of hyperopia, the former only affects people over the age of 40, as the eye muscles of those at that age begin to age. Some people notice this early on, while others don't realize it until they get older. Both hyperopia and myopia are almost hereditary.