Computer Vision Syndrome (CVS) is a complex problem in the eyes and vision that is related to computer use. Approximately 60% reduction in the frequency of blinking during computer use increases the risk of dry eyes and other symptoms related to CVS. There is a need from ergonomics interventions as preventive strategy to CVS risk; one of them is breakpoint of attention media that can trigger the appearance of regular blinks. This study aimed to evaluate the breakpoint of attention media in visual form (which is represented by blink-blink application) and audio (which is represented by metronome application) as CVS countermeasures. Data retrieval was conducted using an eye-tracker for 30 participants. The measurement variables used were the overall blink rate, the frequency of blink duration > 500 ms (indicated as microsleep propensity), and ocular symptoms questionnaire. The results of this study indicate that the blink-blink application is statistically better than metronome in increasing the overall increasing blink frequency, reducing microsleep propensity and from subjective score of ocular symptoms.