How to save the cost of glasses for your family? Look for promotions, and online shopping, take advantage of the buy one get one free offer, and maybe just replace the lenses (keep your favorite frames).

We will show you how to make full use of discounts, promotions, and eyesight insurance to buy the cheapest eyeglasses online for everyone in your family.

Let's get started.

What is the price of prescription glasses?
Prescription glasses can be expensive, especially if you need to buy glasses for the whole family.

How much are we talking about? According to the Consumer Report, the average pair of glasses in famous eyewear chains in the United States is $369.

Multiply this number by two, three, or more-especially if you have young children who wear several pairs of glasses every year-and your glasses bill will quickly cut back on your regular budget.

Proper eyesight care can easily be derailed by lack of means. In a survey of "Think about your eyes", 19 percent said they didn't see an ophthalmologist in the past year because they couldn't afford it.

The good news is that although glasses for the whole family can be expensive, there are many ways to save money.

How can eyesight insurance save you the cost of ophthalmic examination and glasses?
There are two aspects to the home glasses budget. The first is the cost of each eye examination. Then there is the purchase of glasses (no, the price on the frame does not include lenses).

If you have eyesight insurance provided by your employer or your own insurance plan, this means a lot of savings for families who wear glasses.

For example, without insurance, a comprehensive eye examination may cost $100 or more. If you buy eyesight insurance such as EyeMed or VSP, you only need to pay the co-payment, which is usually about $10 for the insured members.

For glasses, your insurance usually provides some discount or allowance for your frames and lenses. The allowance and your self-payment will vary according to your insurance plan.

If you don't have eyesight insurance, you will have to pay all the expenses out of your own pocket. If you have monocular vision and there is no extra treatment, the lenses alone will cost about $100.

Whose glasses are the most cost-effective?
Work with your ophthalmologist or glasses retailer. If you want to buy more than one pair of glasses for your family, you may have a family plan that offers discounts.

In addition, you can also ask to check the clearing frame, which can save a lot of money.

Don't worry, the frame for clearance is usually from last season, not because of any wear or damage.

Check the discounts at the warehouse store. Andrea Woroch, a budget expert, says places like Costco can save you 20 to 30 percent on eyeglasses.

She added: "You don't even need to be a member to book an internal optometrist at Costco," although membership is required to buy glasses.

If the prescription is simple, please shop online. If you wear single-light lenses, you can save a lot of money by buying adult glasses online. With the latest degree and pupil distance after optometry, you can shop online.

But for children who are growing up, or if you are wearing progressive lenses or glasses with complex degrees, it is best to go to the optician to check it in person.

Go to a discount store. Woroch added that if the degree of someone in your family is simple, you can find presbyopic glasses for $1 to $3 at a dollar store or a discount store.

At the very least, these glasses can be used as "spare" glasses for children. In this way, they can safely keep a good pair of glasses when they go to school and do their homework.

Learn about promotions. "sign up to receive an e-newsletter from your favorite glasses brand to learn about new offers or upcoming promotions," Woroch said.

Just like any type of shopping, searching for promotional codes on social media or online may help you save some money in the store or online. Professional advice: you can find the discount codes for glasses, sunglasses, contact lenses and other products on our "glasses offers" page.

See if there is a buy one get one free discount. You may find a "buy one get one free" discount online, which will be a good choice if you have more than one family member with glasses, or if you want to match yourself with another pair of glasses.

Some vision insurance companies and retailers allow you to buy a second pair of glasses at half price or free of charge.

Keep the same frame. If you like the appearance of your glasses and they are still intact, you can ask to reuse the frame when your lens degree changes. After all, in the case of a limited budget, goods are sold for every penny.