This answer is based on my review of the link provided in the question.
I would encourage everyone to avoid companies that use misleading advertising tactics. This company labels their advertising video as follows: "Important Public Message For Your Eyes". I'm sorry, but an advertisement is an advertisement, not an important public message for your eyes! That's strike one against this company.
Strike two is using fear against you. In the section below the video, the first words are "Is your vision at risk?" I don't like that tactic, but I like it even less when they allude to "serious, irreversible and permanent damage to your eyes" and "increasing your risk of age-related macular degeneration, cataracts, glaucoma & total blindness." And then they do not provide any factual evidence related to those statements. That's pure fear mongering.
The third strike is the overall strategy of marketing a dietary supplement as a treatment for any disease -- and doing so in the manner used in this video. The video includes a very medically questionable message that I think is harmful to glaucoma patients. In fact, I think this video is possibly illegal in the context of this website.
Bottom line: I recommend you avoid this company's products. The company is using unethical tactics to sell you products. If their marketing is unethical, their products should not be trusted either.