1. A computer readable storage medium comprising instructions for altering a retino-geniculo-cortical pathway of a user, the instructions for: displaying a first view set, the first view set comprising: a first field of view at a first color and a first intensity; a first stimulus, positioned at least partly within the first field of view, at a second color and a second intensity, wherein the second color is different from the first color or the second intensity is different from the first intensity; allowing a period of time for receiving a first input of the user responsive to the first view set; measuring a parameter of the first input of the user if the first input of the user is received; determining a characteristic for a second view set, the determining comprising: assessing whether the parameter of the first input of the user meets a first parameter criteria, wherein the first parameter criteria is not met if the first input of the user is not received within the allowed period of time; modifying a first value if the first parameter criteria is met; modifying a second value if the first parameter criteria is not met; calculating a first user rating based on the first value and the second value; comparing the first user rating to a user rating threshold; selecting the characteristic of the second view set based on the comparison of the first user rating to the user rating threshold.