Hi Doctor , My Mother-in-law Is Facing Problem Of Blurrness

Hi doctor , my mother-in-law is facing problem of blurrness in front of eye,black clouds type of image in front of eye from last one year and she is patient of high blood pressure and high cholesterol since many years...she has taken treatment in which some injections are giving in eye..but same problem return after some day of injection..we want to know exactly what disease she is having? Is their any treatment from which is can cure? Is gloeye medicine good for her?