A processing system for modifying interactive content includes: a user profile obtaining unit operable to obtain the user profile including information about an eye-in-head radius, the eye-in-head radius representing an amount of a display viewable by a user without moving their head, an interactive element identification unit operable to identify interactive elements in displayed content, and to identify selection areas associated with each identified interactive element, and a content modification unit operable to modify interactions between a user and one or more of the identified interactive elements in dependence upon the obtained user profile, the content modification unit is operable to locate one or more of the identified interactive elements in dependence on the eye-in-head radius, and the content modification unit is further operable to determine an overlap threshold between the eye-in-head radius and each selection area in order for an interaction with a corresponding interactive element to be performed.