Evidence and editorial standards
Our educational pages are written to help people prepare informed questions, not to replace an individual examination, diagnosis or emergency assessment.
We prioritise current guidance from public-health and professional sources such as the World Health Organization, National Eye Institute, CDC and recognised ophthalmic bodies, alongside official manufacturer information for named products. Sources are selected for relevance and are interpreted cautiously.
Clinical pages identify a qualified reviewer where appropriate. Dates, recommendations and links may be revisited as evidence or services change. Material corrections are made when identified.
Symptoms can have different causes. Website information cannot confirm a diagnosis, prescription or product suitability. Sudden vision loss, severe pain, chemical injury, trauma, or new flashes and floaters need urgent professional assessment.
If you notice an error or need clarification, contact Vision Concern on WhatsApp. We will review the specific page and correct substantiated errors.
Last reviewed: September 2026
