Vision insurance: run the math before you enroll

Vision 'insurance' insures against nothing. There is no catastrophic vision event it covers — eye disease and injury are handled by your regular health insurance. What a vision plan really is: a prepaid bundle of one exam and a partial allowance toward glasses or contacts. Which means, unusually for insurance, you can compute its exact value in two minutes and decide like you're comparing phone plans.

What a typical plan gives and takes

• Premium: about $5–15/month ($60–180/year) for an individual; roughly double or more for a family.
• One covered eye exam per year (often with a $10–25 copay).
• A frame allowance of $130–200 every 12–24 months, plus lens coverage with copays — or a contact lens allowance instead of glasses.
• Discounts (15–20%) on extras: coatings, progressives, a second pair.

When the plan genuinely wins

• Your employer subsidizes the premium heavily — a $4/month plan is nearly always worth it.
• Multiple glasses-wearers in the family, each using the exam and full allowance every year.
• Contact lens wearers who also need backup glasses — plans with a real contacts allowance plus exam coverage stack up.
• High prescriptions or progressives bought in-network, where the lens copays beat retail lens pricing by $100+.
• Kids, who break and outgrow glasses on a schedule.

The cash-pay playbook

1. Get the exam at an optical chain or warehouse club; ask for your full written prescription including pupillary distance (PD) — you're legally entitled to it.
2. Buy glasses online: complete prescription pairs commonly run $70–150, versus $300–500 at many brick-and-mortar opticians for comparable quality.
3. Pay with HSA/FSA funds — exams, glasses, and contacts are all eligible, adding a 22–32% pre-tax discount.
4. Skip add-ons priced as fear (premium anti-glare tiers, extended warranties); basic coatings from reputable sellers are fine.
5. If you don't need new glasses this year, you just saved the entire premium — the cash-payer's structural advantage.

The bottom line

Vision insurance is a coupon bundle with a premium, and the math is honest enough to run in your head: heavily subsidized plan or a family full of glasses-wearers, enroll. One adult, one pair a year? Cash exam, online glasses, HSA dollars — you'll match or beat the plan most years and keep the premium in the years you skip.

The plan vs. cash, by household type

The pattern in the table is worth internalizing because it generalizes: prepaid benefit bundles win exactly when your usage is high, predictable, and matched to the bundle's contents — and lose whenever you might skip a year or buy outside the network. The single adult who reliably wants one designer frame annually from an in-network optician gets fair value. The same adult who orders $95 glasses online and stretches them two years is paying $288 of premiums for $170 of stuff. Run last year's actual receipts against the premium before every open enrollment, because the answer genuinely flips as your household changes: new contact-lens wearer, kid starting glasses, or a progressive-lens prescription each move the math a category.

Two money details people routinely miss. First, the exam and the eyewear are separable purchases: nothing requires buying glasses where you were examined, and the exam-here, glasses-online split is usually the single biggest saving available — the markup on frames at many practices runs 200–400% over comparable online pricing. Second, if you have an FSA and wear glasses or contacts, vision spending is the classic December use-it-or-lose-it release valve: prescription sunglasses, a backup pair, a year of contact lenses, and even reading glasses are all eligible. A family that channels its vision purchases through pre-tax dollars gets a 22–32% discount that quietly beats most vision plans' entire value proposition — no premium required.

Contacts: the recurring-cost version of the problem

Contact lens wearers face the same math on a subscription schedule, and the same rules apply with more zeros. You are entitled to your contact lens prescription after fitting, and the price spread between the prescribing office and online retailers runs 20–40% on identical boxes — over $100 a year for many daily-lens wearers. Buy in annual supplies rather than box by box (volume rebates stack), check the manufacturer's rebate before choosing a retailer since rebates often apply only to annual purchases, and run it all through FSA or HSA dollars. A plan with a genuine contacts allowance plus exam coverage can still win for contact wearers — but only compare it against the optimized cash route, not against the prescribing office's shelf price, which nobody paying attention actually pays. Like the glasses math, the answer flips with usage — so run it with this year's actual habits, not the ones you had when you first enrolled, and re-run it each fall while the enrollment window is still open. Two minutes with last year's receipts settles it more reliably than any benefits brochure ever will, and the answer is allowed to be different from your coworker's.