Comment by ajb

Hmm I'm far from an expert but no-one else had commented on this aspect: it's not just about how they take in information, it's about how the lack of sight will affect their development. So worth thinking about what the different things your son needs to learn developmentally at each point and whether you can support that with sound, smell and touch. There are some academic articles on this that can be found on Google scholar.

If he is only partly blind there may also be ways to make sure that visual brain development is supported