There are plenty of jobs that people with low vision or no eyesight can perform with good adaptation. For example, you can go into marketing, sales, human resources, psychology, writing, teaching, social work, customer service, etc. And while some healthcare jobs are hard to perform if you’re visually impaired, others are not. For example, you can become a masseur, a chiropractor, and a physical therapist.
How hard it is to get into those fields as a visually impaired will depend on what skills you already have and what resources are available for you. Many areas have organizations and programs to help people with disabilities find training and work opportunities to stay productive. In Australia, for example, the DES provider at Work Australia helps people navigate these issues. So, check what kind of programs, organizations, and NGOs exist in your area is an excellent place to get started. They can give you a sense of what to expect and help you figure out your goals.