My daughter watches a lot of TV and am worried it would have affect her thinking and also her eyesight. We can't do without TV as my in-laws like to watch serials and daily soaps. What should I do?

Distract her from her tv fixation by getting her books, taking her out to play at the park or playing games. Too much tv at such a young age is not healthy, if you cannot wean it off her, give her a new thing (hopefully something more educational) to fixate on.