How should an optometry or audiology practice track frame, lens, and hearing aid inventory?

Think of your optical and hearing aid sales as a retail store that happens to sit inside a medical practice. The exam side bills insurance and runs on appointments. The dispensary buys product, holds it on the shelf, and sells it at a markup. Both sides belong in the same set of books, but each needs its own tracking or you can’t tell which one is actually making money.

Start with item-level inventory. Every frame, stock lens, and hearing aid should be in your optical or practice management system with its cost, vendor, and SKU. Hearing aids should also be tracked by serial number, since each unit is expensive and tied to a specific patient. The item detail lives in your practice software. The total value should be reconciled every month to an inventory account in QuickBooks Online. When the two numbers don’t match, something was sold, lost, or returned without being recorded.

Record cost of goods sold when the product is dispensed, not when the invoice is paid. Many practices expense frame orders and lab bills as soon as they pay them. A month with a big frame buy then looks terrible and the next month looks great, and neither picture is accurate. Frames stay in inventory until they leave the building. Custom lenses from a lab should be matched to the patient order and hit cost of goods sold when the glasses are picked up. Deposits patients pay at the time of ordering are a liability until the product is in their hands.

Hearing aids need extra attention because of trial periods. If a patient returns a device during the trial, reverse the sale, record the return to the manufacturer, and book any restocking fee the practice absorbs. Otherwise your revenue and margins will be overstated for months.

Count on a schedule. Frames should be counted at least quarterly. Hearing aids and other high-value items are worth counting monthly. Regular counts catch shrinkage, miscoded sales, and frames that came off the board without a record.

Frame board returns and vendor rebates are easy to miss. When a frame rep swaps out slow sellers, record the credit against inventory so you aren’t carrying frames you no longer have. Rebates from frame vendors, lens manufacturers, and buying groups should reduce cost of goods sold, ideally recorded as they’re earned. Booking them as miscellaneous income when the check arrives makes your product margins look worse all year and then jump when the rebate lands.

Finally, keep exam revenue, optical sales, and hearing aid sales in separate income accounts. Vision plan payments for materials belong with optical, not exams. With revenue split this way, you can measure the numbers that matter for a dispensary. Those are optical capture rate (the share of examined patients who buy eyewear from you), gross margin on frames and lenses, and hearing aid margin after device cost. Baker’s treatment profitability work for eye care practices tracks these each month so you know which product lines are carrying their weight.

Clean inventory records also make year-end easier. Your cost of goods sold and ending inventory flow straight onto the practice’s tax return, which is part of why we handle the books alongside our tax services for physicians and other practice owners. The numbers only hold up at tax time if they were tracked correctly all year.