Please look at Bookshare.
https://www.bookshare.org/_/membership/qualifications
Your child may qualify depending on the visual impairment you mention. Kids can also qualify on the basis of learning disability, but I doubt you have that diagnosis in a toddler at this stage.
Bookshare is a USG funded program run by a non-profit in order to make books accessible to those with certain kind s of disabilities. Access is free if you have a qualifying print disability.
You can get almost any kind of book imaginable for any age or interest. They can be read on computer or Ipad. You can scale the print to any size you like and change font color/background color and there are reader voices. If you have an Ipad the Read2Go app costs about $20 and has a pretty decent sounding voice. My son has dyslexia, but he can read somewhat himself. He reads and then uses the voice reader/highlighter for words or sentences he has trouble with. Or you can have the whole book read aloud.
A PP mentioned buying an eReader, which is a good idea, but the cost of buying a comparable amount of eBooks for a disabled child was really too much for us to support. Library waitlists for eBooks were very long and much of the library eBook material, oddly enough, was Disney or other commercial crap.
Bookshare was a godsend for us. Check it out.