G-Screen is a free online glaucoma awareness tool developed in Australia. It is not intended to replace a doctor’s diagnosis; rather, it helps users pay attention to glaucoma risk earlier and bring their test data to an optometrist or ophthalmologist for discussion. It can be used at home in a browser, with no download, registration, or login required. The overall process takes about 6 minutes.
The tool consists of three parts: a short questionnaire covering year of birth, ethnicity, family history, eye exam history, and related factors; a near-vision check; and a peripheral visual field test. The visual tests are powered by Melbourne Rapid Fields (MRF) technology, described in the text as an FDA-cleared, TGA-registered web-based visual field testing platform. Its educational content refers to guidance from Glaucoma Australia. Typical use cases include personal eye-health awareness checks, using the results as supporting material for medical consultations, clinicians recommending it to patients, or deploying it in kiosk scenarios such as pharmacies and retail environments.
G-Screen is completely free, with no subscription, no in-app purchases, and no need to provide an email address or phone number. On privacy, the platform states that no account or personal information is required. Anonymized results may be used for research and cannot be linked to an individual. If users choose to save results via email or SMS, their contact details are passed to a third-party delivery service but are not stored on G-Screen’s servers. Result links remain valid for 30 days and are deleted after expiry; de-identified aggregate data may continue to be used for improvement and research. No API is disclosed, aside from the ability to send results by email/SMS.
The main advantages are its low barrier to entry, free access, no registration requirement, and use of visual function technology with a clinical validation background. It also clearly communicates the boundary that it is “not diagnostic.” The limitations are equally important: G-Screen does not provide medical advice, diagnosis, or treatment, and explicitly states that it cannot diagnose or screen for any disease, meaning eye conditions may be missed. Results may also be affected by screen calibration, lighting, screen size, testing distance, user attention, and whether reading glasses are worn. In terms of devices, it requires a desktop computer, laptop, or tablet of 10 inches or larger, and does not support mobile phones.
It is suitable for adults, people with a family history of glaucoma or an interest in eye health, as well as optometrists and ophthalmology professionals who want to improve patients’ early-screening awareness. Chinese-language support is not clearly stated; the site only indicates that multilingual support is being developed. There is no public information about network accessibility from mainland China or payment-related issues. Since no payment is required, payment barriers are low, but medical advice should still be based on local ophthalmologists and local guidelines. If it is inconvenient to use in China, formal offline eye pressure, fundus, and visual field examinations at ophthalmology or optometry institutions can be considered as alternatives.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on g-screen.online official site.
g-screen.online is an Australia AI Apps provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach g-screen.online directly.