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Sector index · Glasses and lenses

Which brands does AI name for questions about glasses and lenses?

Opticians and online eyewear shops AI names for new glasses or lenses.

No measured week yet · 8 questions ready · not measured yet

Not measured yet

This sector has not been measured yet

The question set for glasses and lenses is ready: 8 buying questions and three personas. The index runs part of the sectors each week within a fixed budget; this one is due within 4 weeks. Until then we show no numbers here — a sample leaderboard would suggest a measurement that never happened.

prompt set v1

The 8 questions we ask

  1. 01Waar koop ik het voordeligst een bril op sterkte in Nederland?
  2. 02Welke opticien is het beste voor een multifocale bril?
  3. 03Waar bestel ik contactlenzen met een maandabonnement?
  4. 04Welke online brilwinkels leveren goede kwaliteit glazen?
  5. 05Waar kan ik gratis mijn ogen laten meten?
  6. 06Welke winkel heeft de beste garantie op krassen in glazen?
  7. 07Wat is een goede plek voor een sportbril op sterkte?
  8. 08Welke opticiens werken samen met zorgverzekeraars voor vergoeding?

Without a brand name, in Dutch, with the Netherlands as market. The same set every week.

The personas behind the questions

  • Veertiger die voor het eerst een multifocale bril nodig heeft
  • Student die online een goedkope bril wil bestellen
  • Lenzendrager die maandlenzen via een abonnement wil

Personas and questions are in Dutch: the index measures the Dutch market.

Full method

How this was measured

  • 01Every question goes to the engines through their API in a clean session: no account, no history, no personalisation.
  • 02Brand names are extracted from each answer (text extraction). Per brand the decision layer judges whether it is a real brand in this sector, whether it is a marketplace, how it is spoken about and how prominently it appears. That certainty is shown in the table.
  • 03Brands only count when the probability that they are a real brand is at least 50%. Borderline cases are left out.
  • 04Share is measured over a four-week window with a 95% confidence interval. Names that turn out to be the same company are merged once the decision layer confirms it.
  • 05Engines without a usable API (such as Google AI Overviews) are not in this index. Browser captures of consumer products follow once the capture service is publicly available; those will be labelled separately.
Full method

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