1. A method comprising: receiving a set of responses to a set of input fields in a form; identifying, while receiving the set of responses, a set of eye movements of a user in relation to the form; correlating the set of eye movements to the set of responses; determining a set of possible errors in the set of responses based, at least in part, on the set of responses and the set of eye movements, wherein: the set of possible errors includes an omitted response in the set of responses, and the set of eye movements includes a hesitation; and suggesting a set of modifications to the form, but not the set of responses, based, at least in part, on the set of possible errors; wherein: at least identifying a set of eye movements of a user in relation to the form is performed by computer software running on computer hardware.