Cataract is a clouding of the natural lens that can only be treated with surgery.
Although cataracts can be the cause of vision loss, it can be removed with a one-day procedure. With modern surgery, in addition to cataracts, diopters are also removed.
In some cases, in the initial cataract, vision can be improved with glasses because the protrusion of the lens causes myopia (minus diopter), but over time and as the lens blurs, the glasses are no longer useful and the only solution is surgery of cataract (curtain).