Many of these companies have faithfully covered vision therapy for decades. In fact one of the best ways to determine the quality of your insurance company is to determine if they do cover vision therapy. Vision therapy is typically not covered by routine optical benefit plans. Such plans cover eye examinations and glasses. Instead, vision therapy falls under the area of Major Medical.
Insurance policies vary widely.
But even here there can be disappointments. Some well known plans, unfortunately do not really provide the benefits they lead you to believe. When such policies are carefully investigated, they are found to fight paying for many different services which you would expect them to cover. Vision therapy may or may not be one of these services. With a good company, it is not uncommon to have your reimbursement in the mail within two to four weeks.