@AlamaraKhatun-e6j na jehotu boyosh ta mention koreche 42 tai presbyopia, kintu kokhono kokhono cataract er jonnow jhapsa dekhte paren but cataract generally aro beshi boyoshe hoy around 60 yrs or above age e jokhon lense er protein nosto hote shuru kore boyosh jonito karone. se jonnoi ekhane presbyopia answer hobe.