Will I need to purchase a new membership to use the EyeQue VisionCheck?

No, you can use your current EyeQue PVT Membership to use the EyeQue VisionCheck as long as it has not expired.  If you have a grandfathered membership, you will never have to purchase a membership for any EyeQue device.  If you currently have an EyeQue PVT Membership and activate the VisionCheck, one full year will be added to your account.