DRIVEFields

Nowhere. DRIVE Fields runs entirely in your browser. There is no backend, no database, no analytics, and no third-party tracking. The patient data you enter (missed points, false-positive rate, licence type, State or territory) lives only in your browser tab and is gone when you close it. We never see it. Our hosting provider never sees it. Nothing is uploaded.

Two convenience preferences only, in your browser’s local storage: the last State or territory you selected, and the last device family (Humphrey, Medmont, or Octopus). These are remembered automatically so you don’t have to re-enter them next session. No patient data, no missed-point selections, no test results, and no assessment outcomes are stored anywhere. The two preferences are readable only by you, never leave your machine, and you can clear them via your browser’s “Clear site data” option.

Yes. The result panel shows the specific Austroads section the verdict draws from, so you can quote the same clause in your report. Always describe DRIVE Fields as a decision-support tool, not as the basis for the determination. The clinical judgement stays yours; the licensing decision stays the authority’s.

No. DRIVE Fields applies the rules in Austroads section 10.2 to the data you enter and shows what those rules indicate. The decision to issue, restrict, or refuse a licence rests with the State or territory licensing authority. Your clinical judgement is always in the loop, and a “manual review required” verdict means the rules can’t be applied confidently and you decide.

Manual entry of the Esterman binocular 120-point pattern works for any perimeter that produces this pattern, including Humphrey, Medmont, and Octopus. You enter the points yourself by clicking the grid; DRIVE Fields doesn’t read the printout.

If the device prints a 120-point binocular Esterman pattern, you can still enter the points manually. If the test pattern differs (custom protocols, monocular-only, non-standard grid spacing), the rule engine isn’t appropriate. Refer to Austroads section 10.2 directly and use clinical judgement.

The rules can’t be applied confidently to the case. Common reasons:

• False-positive rate above 20% (reliability not established)
• Fixation monitoring not recorded
• Atypical missed-point pattern that doesn’t match the cluster definitions
• A finding the engine is conservative about

Your clinical assessment takes over. The result panel shows which check triggered the flag.

DRIVE Fields was built by Dr Simon Chen FRANZCO, a Sydney-based ophthalmologist, because consistent, referenced visual-field assessments save time in busy clinics and reduce variability between clinicians. It is free, will stay free, and exists as a clinical contribution rather than a business. No monetisation is planned.

No. DRIVE Fields is free forever. There is no subscription, no premium tier, and no plan to introduce one. If you want to support the work, share it with a colleague.

You don’t have to install anything; the URL works in any browser. If you want it to feel like an app on your home screen or dock:

Phone

• iPhone or iPad (Safari): tap the Share button, then “Add to Home Screen.”
• Android (Chrome): tap the menu (⋮), then “Install app” or “Add to Home Screen.”

Desktop

• Chrome or Edge (Windows, macOS, Linux): click the install icon in the address bar, or open the menu and choose “Install DRIVE Fields.”
• Safari (macOS Sonoma 14 or later): open the File menu and choose “Add to Dock,” or click the Share button and choose “Add to Dock.”
• Firefox: Firefox no longer supports installing websites as apps on desktop. The simplest alternative is a desktop shortcut: drag the URL from the address bar onto your desktop, or pin a bookmark to your toolbar for one-click access.

Once installed, the app opens in its own window and behaves like any other application.

You need internet the first time you load the page. After that, the assessment itself runs entirely in your browser. Marking points, entering test details, and running an assessment work without any further network calls; nothing is uploaded or downloaded during use.

Most return visits will also work offline because your browser caches the app after the first load, though this isn’t guaranteed across browser updates or if you clear your cache. Installing it as a web app (see the question above) usually makes the offline behaviour more reliable.

Email feedback@drivefields.com.au with the case details (no patient identifiers) and what you observed versus what you expected. Suggestions are welcome.