Nova has temporarily stopped the formalized vision screenings as part of our community outreach course due to legal reason as stated previously. However, as a student at Nova, we are required to complete 10 hours of community service each year. As such, there are plenty of opportunities promoted by the school, the HPD itself, clubs, teachers, and the community to help out at various health fairs and vision related events, including giving vision screenings, which I have done (and assisting with yoga for the blind...my personal favorite 😀)
You should talk with the community outreach faculty member. I am sure she would be thrilled by your enthusiasm.