Optometrists illegally withhold pupillary distance measurements to block online purchases

Pupillary distance (PD) -- the millimeter measurement between the centers of your pupils -- is required to order glasses online. Despite the FTC's Eyeglass Rule requiring optometrists to release prescriptions automatically after an exam, PD is often excluded from the written prescription because many states do not explicitly classify PD as part of the prescription. Optometrists exploit this gray area, telling patients 'we don't provide that' or charging $25-$50 extra for a measurement that takes 10 seconds with a pupillometer. This matters because PD is the single biggest barrier preventing consumers from buying affordable glasses online. Without it, you cannot order from Zenni, EyeBuyDirect, Warby Parker, or any online retailer. Patients who just paid $200-$400 for an eye exam are told they need to come back or pay extra for a number the doctor already measured during the exam (it is part of the fitting process). The result: millions of consumers are funneled back to the optometrist's in-office optical shop where the same frames cost 3-10x what they cost online. A pair of single-vision glasses from Zenni costs $15-$40; the same prescription filled at LensCrafters costs $300-$600. This persists because optometrists derive 40-60% of their practice revenue from optical sales, not exams. Releasing PD measurements means losing those sales to online competitors. State optometry boards, which are controlled by practicing optometrists, have actively lobbied against legislation requiring PD release. The American Optometric Association has fought FTC efforts to strengthen the Eyeglass Rule. Only a handful of states (like New Mexico) explicitly require PD on prescriptions. The conflict of interest is structural: the people who regulate optometry are the same people who profit from withholding the measurement.