Eligibility for VA health care is dependent upon a number of variables, which may influence the final determination of the services for which you qualify.
These factors include the nature of a veteran's discharge from military service (e.g., honorable, other than honorable, dishonorable), length of service, VA adjudicated disabilities (commonly referred to as service-connected disabilities), income level, and available VA resources among others.
http://www.military.com/benefits/veterans-health-care/va-health-care-eligibility.html
Annual Income Thresholds
Please review the documents below to learn more about VA National Income Thresholds for prescription and medical benefits.
http://www.va.gov/healthbenefits/cost/income_thresholds.asp