I have achieved that age where losing eye sight is so very common. My eye sight is getitng weaker and that is preventing me from doing lots of works. I am not able to read or write that proficiently which I used to. I have heard of Nearsightedness And Farsightedness but do not have any idea about these sight problems. Could somebody elaborate these two in detail and then I would judge what condition I am suffering from. I wish to know if any medical help is needed into such conditions?