1 If X is a topological (or metric) space and M is a metric space, then the set of all bounded continuous functions from X to M forms a metric space if we define the metric as above: d (f, g) = sup x in X d (f (x), g (x)) for any bounded continuous functions f and g.
Invisalign is orthodontic appliance, so since orthodontic treatment is allowed as an FSA expense, Invisalign is covered. Different companies have different rules concerning amounts set aside and the timing of how funds are used for orthodontics.
However, you can take advantage of the. Limited Purpose FSA. The Limited Purpose FSA covers only vision, dental and orthodontic expenses. for you and your family and does not affect your HSA eligibility. Following are some common questions regarding the use of an HSA with the Limited Purpose FSA: