NEW YORK—The 2017 group of VM Top 50 U.S. Optical Retailers’ collective sales totaled $12.8 billion in 2016, according to VM’s estimates. That’s just a sliver above the $12.1 billion they were estimated to be in 2015, although the composition of the regional groups, franchises and chains in the total differed slightly.

The shift in the Top 10’s share of sales, however, grew to a collective estimated $11.0 billion for 2016, compared to $10.5 billion in the prior year. And the composition of the retail groups within the Top 10 changed, with a new number 1 group and a new number 9 and number 10.