I am pretty sure they can see properly, Napa, because we started LR since 4 months and she enjoyed it. But you can always experiment and see what works with your baby the best. We did a lot of things in printed form as well at that point, I wish we continues with that, but I just did not have a chance to keep up with making my own printed materials, so I used LR
We still read lots of books through, and do other activities
Hope you will find what will work the best for you!