new card design--box around the pips?

A casino just changed its deck design to put a box around the pips on the cards. Black suits get a red box with black trim, red suits get a black box with red trim. The boxes look fuzzy to the eye. Other than that the card numbers/indexes and pips are the same size. Why is the casino doing this?

I've seen the card designs with indexes in the corners which I've assumed are for the myopic. I am hoping that someone can solve this puzzle for me. Thank you.