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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryRetail & CommerceOpticians & Eyewear RetailEffretikonKeller Optik AG
Keller Optik AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Keller Optik AG is the sale and consulting of visual aids, including glasses, contact lenses and visual training. The company also offers a variety of services, such as eye tests, consulting and adjustment of visual aids, as well as the sale of glasses frames and sunglasses.

AI-generated
Offering

Products & services

Industry:Opticians & Eyewear Retail
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Keller Optik AG

6
Eyewear
Progressive lenses, office glasses, children’s glasses, sunglasses, as well as specialty eyewear and magnifying visual aids; also designer frames from the online shop and models available for trying on in-store.
Contact lenses
Daily lenses, monthly lenses, multifocal lenses as well as annual and specialty lenses; including lenses for everyday use, for screen work and for different vision corrections.
Consultation
Needs analysis for glasses and contact lenses, selection of suitable frames and lenses based on visual situation, occupation, hobbies and wearing comfort.
Visual training
Visual analysis, special measurements and an individual training program for visual perception disorders, eye coordination and problems with the coordinated use of both eyes.
Services
Cutting-in of spectacle lenses, alignment, fitting and repairing of glasses, lens subscription service, and driving licence vision test.
Offers
Offer for children’s glasses, complete glasses package, complete sunglasses package, and discounts when buying several pairs of glasses.
Trust & reputation

ranQ Trust Score of Keller Optik AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Keller Optik AG scores 84.7 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.85.624%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.79.710%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.88.08%
Keller Optik AG scores 85.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Keller Optik AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Keller Optik AG scores 57.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.57.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Keller Optik AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.9 out of 5 stars from 22 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.9
of 5

Aggregated from 22 reviews across all connected sources

Sources
GGoogle4.922
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Comparisons

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Location

Hier entsteht die Karte
Poststrasse 2
8307 Effretikon
Opening hours
Mon
Closed
Tue
08:30 - 12:00, 13:30 - 18:30
Wed
08:30 - 12:00, 13:30 - 18:30
Thu
08:30 - 12:00, 13:30 - 18:30
Fri
08:30 - 12:00, 13:30 - 18:30
Sat
08:30 - 16:00
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-115.231.106
Founded
2009 · 17 years
Last commercial register change
December 18, 2025
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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