1. An electronic device, comprising: a display; a touch-sensitive surface; one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for: presenting in an application one or more user interface elements of a first accessible-response type and one or more user interface elements of a second accessible-response type distinct from the first accessible-response type; while the electronic device is operating in a sighted mode: detecting a first interaction with a user interface element of the first accessible-response type; in response to detecting the first interaction with the user interface element of the first accessible-response type, performing an operation in accordance with a set of one or more sighted-mode gesture responses for the user interface element of the first accessible-response type; detecting a second interaction with a user interface element of the second accessible-response type; and, in response to detecting the second interaction with the user interface element of the second accessible-response type, performing an operation in accordance with a set of one or more sighted-mode gesture responses for the user interface element of the second accessible-response type; and, while the electronic device is operating in a first accessible mode: detecting a third interaction with the user interface element of the first accessible-response type; in response to detecting the third interaction with the user interface element of the first accessible-response type, performing an operation in accordance with a set of one or more first-accessible-mode gesture responses for the user interface element of the first accessible-response type; detecting a series of interactions with the user interface element of the second accessible-response type; and, in response to detecting each interaction in the series of interactions with the user interface element of the second accessible-response type, performing an operation in accordance with the set of one or more sighted-mode gesture responses for the user interface element of the second accessible-response type.