Wow! We all seem to be attacked by illnesses lately Vibi.
Cataract can fortunately be fixed by the doctors, as mine was removed in my left eye last year. Thyroid is also a problem that can be medically managed.

Hope your mom will be helped my friend.

My back was seriously damaged in a bike accident years ago and I regularly go for stretching exercises, maybe you have a posture problem?. I promise you that the stretches help a lot and maybe you must look into it.
Whatever you do, never give up!
Blessings!