Every FSA dollar left unspent by December 31, 2026 disappears, unless an employer opts into a carryover of up to $680 into 2027 — and employers aren't required to offer that (Truemed, 2026). Eye exams, glasses, and contacts all qualify, which is why the final six weeks of the year are an optometry practice's busiest call-volume stretch. **A missed call in that window isn't a delayed appointment — it's forfeited patient money, and for the practice, a sale that usually doesn't come back.**
Why Does December Become an Optometry Practice's Busiest Call Month?
The mechanism is the calendar, not marketing. Flexible spending accounts run on a strict "use it or lose it" clock: for most calendar-year plans, whatever sits unspent on December 31, 2026 is simply gone (Truemed, 2026). An employer can choose to soften that — either a grace period running through March 15, 2027, or a carryover capped at $680 — but neither is guaranteed, and plenty of plans offer neither (Truemed, 2026). On top of that, most vision insurance runs on its own January 1 reset, and an annual exam benefit that goes unused doesn't typically carry into the next plan year at all. Stack those two clocks together and a lot of patients who've been putting off an exam all year suddenly have a real financial reason to call in November and December — all at once, all against the same hard date.
How Many of Those Calls Does a Practice Actually Miss?
More than most owners assume. Practices without a formal call-handling process miss 20% to 30% of inbound calls during business hours, and roughly 80% of callers who reach voicemail simply hang up instead of leaving a message (MyBCAT, 2026). MyBCAT's own math on a mid-size practice makes the stakes concrete: a practice fielding 50 calls a day that misses 20-30% of them is losing 10 to 15 calls daily, and if even a third of those are prospective new patients, that's three to five new-patient opportunities gone before lunch — every single day (MyBCAT, 2026). Each of those missed calls carries an estimated $200 to $400 in lost revenue once the exam fee, optical sale, and any follow-up visit are counted (MyBCAT, 2026). None of that is December-specific. December is just the month the same leak gets a lot more expensive, because the caller on the other end has a deadline too.
Voicemail vs. a Live Answering Service vs. a Phone System Built for the Practice: Which One Actually Covers the Rush?
Not every way of answering the phone holds up the same way once call volume spikes for six straight weeks. Here's how the three common setups actually compare on the things that matter during an FSA rush:
| What a December caller needs | Voicemail only | Generic outsourced answering service | A phone system built for the practice |
|---|---|---|---|
| Books the appointment on that same call | No — caller has to wait for a callback | Sometimes — depends on whether the service can actually see the real schedule | Yes — checks the real schedule and books it on the spot |
| Picks up during lunch, after hours, or when the front desk is on another line | No | Yes, usually at a cost that rises with call volume | Yes, without a per-call cost that climbs as December's spike hits |
| Knows this practice's actual insurance list, hours, and policies | No | Rarely — generic scripts, not practice-specific | Yes — built on the practice's own information |
When Is a Human-Only Front Desk Still the Better Choice?
Say this plainly: a small, solo-doctor practice that isn't trying to grow its patient count, already runs close to a full schedule, and handles a modest, predictable call volume doesn't need to change anything. A front desk person who answers consistently and never lets a call roll to voicemail is already doing the job. And no phone system, AI or otherwise, should be handling genuine insurance-verification nuance or a clinical triage question — "does my plan cover this lens upgrade," or "my eye has been red and painful since this morning" — those calls need a trained person who can actually judge the answer, not a system reciting a script.
Why Does This Hit Harder in Rural Montana Than Almost Anywhere Else?
Because the supply side is already thin before December's demand spike ever shows up. Dr. Jon Kolstad is described as one of few private eye doctors covering five counties in northeastern Montana, flying himself between clinics to reach patients who'd otherwise drive hours (MTPR, 2025). Dr. Ron Benner, a past American Optometric Association president, told Montana Public Radio he routinely sends patients 100 miles south into Wyoming for specialized care because he can get them seen there within two weeks — versus two, three, or four months for the same care in Montana (MTPR, 2025). The same reporting projects that by 2035, rural communities will only have enough eye-care providers to meet 30% of actual need, and notes that most of the field's national growth is landing in bigger cities, not rural ones (MTPR, 2025). Layer the AOA-cited finding that optometry no-show rates run near 25% on top of that scarcity, and the math changes: a cancellation in a Montana practice this thin on providers isn't a loss, it's a rare open slot — one that only gets refilled if whoever calls next actually gets through (AOA, 2026). In a market with this little slack, a ringing phone that goes unanswered isn't a minor miss. It may be the only chance that slot gets filled before the FSA deadline closes it out entirely.
What Should a Practice Actually Do Before the December Rush Hits?
Start by finding out the real number, not the assumed one: pull call logs for a normal week and count how many calls actually connect to a person versus ring out or hit voicemail. Then fix the obvious leaks first — lunch hour, the last hour before close, and any day the front desk is double-booked with patients in the chair. Because every no-show this time of year (running near 1 in 4, per the AOA-cited data above) opens a slot that's gold during the FSA rush, make rebooking that opening the first call back made each day, not the last. For the routine volume — confirming hours, insurance accepted, whether an opening exists this week — a phone system that can answer every time, book straight into the real schedule, and hand anything that needs judgment to a person covers the gap without adding a body to the front desk.