Since both your teeth and your vision are important, you don't want to pick just one type of coverage.
If you don't have any coverage, you are in a risky position. There could be serious problems with your teeth and you won't know it until it is too late. Your vision may be suffering and getting worse, but you aren't able to do anything about it. Don't let such risks be a problem for your future because too often, such problems can't be reversed.
With dental and vision plans, you will get the coverage you need but at a discounted price. It is going to cost you far less each month than it would for insurance. The amount you will pay for each visit depends on what will be conducted at that appointment. The providers you have selected from the approved providers will be able to share with you what your cost will be each time.
For dental care, you may be able to get your teeth cleaned and your x-ray completed. There may be a handful of other basic procedures covered too. For the vision, you should be able to get an annual exam and save money on corrective lenses if you need them. Just about all of the programs offer those basic services, and that can be far more coverage than you have had for some time.
There are dental and vision plans offering more advanced procedures. However, this is going to increase the cost of the program per month. If you are in good overall health, you may not find there is enough value with those additional benefits to pay for the extra month's fees. You don't want to pay for coverage you never use.
On the other hand, that additional services from dental and vision plans can come in helpful when you need them. You never know when your dentist or your eye care provider will tell you there are additional services you need. You need to take your time to look at the pros and cons of various programs, so you can find the right fit for your needs.