Who prepares these guides
Clear Lens editorial is the site’s publishing name for its explanations, comparisons and translations. It is not a clinician’s name or a professional qualification. The site does not currently identify an individual clinician author or medical reviewer.
Our purpose is to make eyewear information easier to understand before an appointment: explain a term, show a worked example and help you ask a specific question. These guides do not assess your eyes or prescribe a product.
How to read our explanations
Source links point to the organisations, research summaries or manufacturers behind the underlying information. Source labels describe who published a reference, not a quality score. On selected guides, a reading note connects a particular source to the question it helps answer and states its limits.
Worked examples, comparison prompts and diagrams are teaching material prepared for this site. A hypothetical quote or illustration is not a patient record, a product test or a measured result. Manufacturer claims are kept separate from independent research.
Some explanations and translations are prepared with AI assistance. This helps organise terminology and examples; it is not a substitute for clinical review. The English and Chinese pages are intended to convey the same information, with links to the original-language sources.
Dates, changes and uncertainty
“Published” and “Updated” refer to this site’s content. A dated reading note records when that particular linked source was consulted; it does not mean a new study was published or a clinician approved the guide. An older review keeps its original year and search cutoff.
Substantive revisions receive a new content date and, where available, a short change note. A layout or wording-only template update does not refresh every article’s date. Evidence can remain uncertain even when a source is accessible and correctly cited.
Product information and independence
Brand pages organise official product references by design and market. They are not hands-on reviews, paid rankings or comparative clinical trials. The site has no affiliate purchase links. Names, availability and service terms must be checked against the exact local offer.
To check a disputed statement, keep the page address, the exact sentence and the original source together. A newer source may change the interpretation; compare the population, product version and outcome before treating two statements as contradictory.
A source type is not an evidence score
- Systematic review
- Read the population, outcomes, search date and uncertainty together; a review does not answer every product claim.
- Public health information
- Useful for general health explanations and safety guidance; individual assessment and local advice still matter.
- Professional body guidance
- Explains terminology and dispensing practice; it is not a head-to-head product trial.
- Research guidance
- Check the report’s definitions and intended population before applying a conclusion.
- Manufacturer information
- Documents the maker’s specifications or positioning for a market; it does not establish independent superiority or personal suitability.
- Materials industry reference
- Describes material properties; a finished frame also depends on its construction and fit.
- Science education
- Supports physical principles and terminology, not clinical or product-performance claims.