A method for performing an assessment of vision is provided, and comprises: determining a current difficulty level for the assessment； displaying a question of the assessment, the question including a visual element that has a movable pattern, the movable pattern having at least one variable attribute that is related to the current difficulty level； in response to receipt of an inputted answer, determining whether the inputted answer is correct； and determining whether the assessment is to be concluded, and in the affirmative, generating a result of the assessment based on the current difficulty level.
