Conceived after Teju Cole suffered an attack of papillophlebitis, or “big blind spot syndrome,” in 2011, “Blind Spot” and its companion volume of the same title complete what he calls “a quartet about the limits of vision.” It combines the omnivorous erudition of his 2016 essay collection Known and Strange Things with the associative structure of Every Day is for the Thief (2007) and Open City (2011), peripatetic novels set, respectively, in Lagos and New York. The show is a record of Cole’s extensive travels between 2011 and 2017, but it is less concerned with his own itinerary than with the paths of others.