Marketers use the fact that people love free stuff to promote their goods via freebie offers. So tap into this concept, too, to promote your own goods, including your line of reading glasses and accessories. What you can do first is contact vendors to see about getting some cheap or free stuff to give out. For instance, maybe they have outdated lens cleaner towelettes that you could give out to people who sign up for your newsletter. You can also hire ghostwriters to make freebies like free reports and ebooks (electronically delivered digital books) on eye topics like eye health, eye care, etc.
Then give your free stuff away as people shop at your site (a free gift with each purchase) or sign up for your newsletter or ezine (electronically delivered digital newsletter), etc. Set up leads capture pages, AKA squeeze pages, to capture contact and email info and give freebies away then.