Your monthly financials came back. Revenue is up 4 percent over last year. Net income is positive. On paper, things look fine.

But the bank balance has been tightening for three months, and something does not add up.

That gap between "the reports look okay" and "cash keeps shrinking" is where most optometry practice problems live. The numbers are in your financials. You just need to know which ones to look at, and what they mean when they move.

Here are five red flags that show up in practice reports long before they show up as a real problem.

1. Optical gross margin slipping below 55 percent

The optical side of your practice should carry a gross margin somewhere in the range of 55 to 65 percent (optical revenue minus the cost of frames and lenses, divided by optical revenue). When that number falls below 55 percent and holds there, something is off.

It usually comes down to a few things. Frame or lens costs have crept up without a corresponding adjustment in what you charge. Discounting is happening more frequently than you realize, whether to move aging inventory or because your opticians are accommodating patients in ways you have not noticed. Or your frame board has stock sitting past the 12-month mark, tying up cost without generating full-price revenue.

That last one is worth a closer look if you have not done a board audit recently. A frame that has been sitting for 14 months already has its cost recorded in your books. The revenue side is still zero. The effective gross margin on that unit, until someone buys it, is negative. And if it ends up marked down, the loss is locked in.

Our piece on frame inventory turns covers the open-to-buy mechanics in more detail, including what a typical frame board should look like at the 30, 60, and 90-day turn marks.

2. Total payroll at or above 40 percent of collections

Payroll as a percentage of total collections is one of the cleaner health signals in a practice, and one of the easier ones to let drift without noticing.

In a solo or small practice without a production-compensated associate OD, payroll running above 40 percent of collections is a threshold worth investigating. (If you have an associate whose compensation ties to production, their pay is payroll too, so the percentage legitimately runs higher. The benchmark shifts depending on your model.)

What does not shift much is trend direction. If your payroll-to-collections ratio has moved from 34 percent to 38 percent to 41 percent over 24 months and nothing about your staffing model has changed, one of a few things is happening: overtime is getting absorbed into hourly line items without a structured review, a part-time role has effectively become full-time in hours without a formal reclassification, or collections growth slowed before your payroll decisions did, and the gap opened quietly.

The fix is not always headcount. Sometimes it is schedule structure or reclassification. But you cannot diagnose it until you are looking at the percentage, tracked over time, rather than the dollar amount in isolation.

3. Net income is positive, but cash keeps dropping

This one surprises even owners who pay close attention to their books. The income statement shows a profit. The operating account balance declines anyway. Both are true simultaneously, and neither number is wrong.

The gap almost always traces to cash leaving the business in ways that do not appear as expenses on the income statement. Equipment loan principal is usually the biggest piece: if you financed a phoropter, slit lamp, or OCT in the last few years, only the interest portion of your monthly payment shows as an expense. The principal component, which might be $2,000 to $2,500 a month on a $150,000 loan (illustrative, your rate and terms vary), just reduces the bank balance without a corresponding line on the income statement.

Add owner draws above net income and the gap grows. If the practice earned $7,000 this month and you drew $10,000, the extra $3,000 comes from cash with no income statement entry. Then layer in quarterly federal and state estimated tax payments, which come out of the operating account when due and do not appear as expenses until year-end reconciliation. A $15,000 estimate in September does not show up as a September expense. The bank balance just drops.

Any one of these produces the "we were profitable but cash is tight" effect. All three together can make a financially healthy practice feel like it is struggling every quarter.

4. Clinical revenue declining as a percentage of total revenue

Your practice has two revenue streams with different margin structures: the clinical side (exams, testing, medical billing) and the optical side (frames, lenses, contact lenses). A blended total revenue figure can hide a meaningful shift between the two, and that shift matters.

This piece on the two-margin structure goes deeper on the mechanics, but the short version: if optical revenue has been growing while clinical revenue stays flat or shrinks as a percentage, you may be looking at an optical business that is masking a softening exam engine.

That matters because optical revenue depends on clinical volume. Patients generally do not walk in to browse frames without an exam. When exam volume softens, optical usually follows with a lag of somewhere between six months and a year and a half. By the time optical revenue also drops, you have two problems instead of one, and the second one is harder to fix quickly.

The thing to watch for: clinical collections flat for two or more consecutive quarters while optical holds or grows. It does not always mean something is wrong, particularly if you have been intentionally shifting toward a more product-heavy mix. But if you have not made that choice consciously, it is worth asking why the mix shifted.

5. Revenue per patient visit falling year over year

Suppose your practice saw 4,800 patient visits last year and collected $1.2 million. That is $250 per visit. This year you project 5,100 visits and $1.22 million in collections. The total is up, which looks good. But revenue per visit is now about $239, down roughly 4.5 percent year over year.

When that number declines while visit count stays flat or grows, three things are usually responsible. Your payer mix has shifted toward lower-reimbursement plans, which means more insurance adjustments and a lower effective fee per visit. Your optical conversion rate (the share of exams that result in a dispensary purchase) has softened, often because of changes in how optical is presented or staffed. Or your associate OD's production per visit runs below yours, and their share of total visit volume has increased.

Each of these has a different fix. A payer mix problem is a contracting and scheduling question. An optical conversion problem is a workflow and floor-staffing question. A production-per-visit difference between providers is a coaching and scheduling question. You need the right metric to know which one you are actually dealing with.

The KPI benchmarks piece covers revenue per visit alongside six other practice health numbers worth tracking monthly.

What to do when you spot one

A red flag in your current reports is data, not a diagnosis. The first step is confirming it is real and not a miscategorization. A lot of optical margin problems, for instance, trace back to frames being posted to the wrong expense account rather than an actual pricing or buying problem.

Once you confirm it is real, the next question is whether it is a trend or a one-month anomaly. A single month with elevated payroll could be a one-time coverage gap or a small sign-on bonus. Three months in the same direction is something worth understanding.

If you want a faster way to see which of these might apply to your practice, the practice health benchmarks white paper on our optometry practice page covers seven numbers chosen specifically to surface these kinds of problems early. It is free, and it takes about 20 minutes to work through with your most recent reports.

Questions owners ask about this

What is a healthy optical gross margin for an optometry practice?

A commonly cited range in optometry practice management is 55 to 65 percent gross margin on optical revenue (revenue from frames and lenses, minus the cost of those items). Below 55 percent is worth investigating: it usually points to pricing that is too low, buying costs that have crept up, or aging inventory that had to be discounted to move. The number varies some by practice mix, but if the margin has been drifting down for more than two quarters, it deserves a closer look.

How do I know if my payroll percentage is too high?

In a solo or small practice without an associate OD, total payroll above 40 percent of collections is a commonly referenced threshold. If you have an associate on a production arrangement, their compensation is payroll too, so the number can run legitimately higher. The more useful signal is trend: if payroll as a percentage of collections has moved from 34 percent to 41 percent over two years without a change in your staffing model, something is absorbing hours without a matching return.

Why does my income statement show a profit but my bank balance keeps dropping?

The most common causes are equipment loan principal (which reduces cash but never appears on the income statement as an expense), owner draws above net income, and quarterly estimated tax payments held in the operating account. A practice can show $8,000 per month in net income and still have cash tighten if the owner draws $12,000, the practice pays $2,500 toward loan principal, and a quarterly estimate is due. None of those three show up as expenses on the income statement.

How often should I review my practice's monthly financials?

Monthly, with reports in hand by the 15th of the following month. That gives you time to act before the quarter closes. Waiting until your tax return is prepared in the spring means you find out about a frame margin problem seven or eight months after it started, when the fix is more expensive.

What is the difference between revenue per patient visit and production per patient visit?

Revenue per patient visit uses your collections as the numerator. Production uses fees charged before insurance contractual adjustments. In a practice with significant insurance volume, the two can diverge considerably. A production figure that looks healthy alongside falling collections usually points to a payer mix shift or rising contractual write-offs, not a visit-volume problem.