The Henson 900: In a field of its own

I am sure most readers are familiar with at least one version of a Henson visual fields analyser. Their ubiquity in community practice and their evolution over the last 20 or so years means many of us of a certain age have a particular soft spot for the instruments. In my hospital pre-registration year Friedmann machines predominated and I first came across an earlier version of the Henson when I moved into community practice in the early 1990s, just as the first Humphrey VFAs were replacing the hospital Friedmanns.

Since then the Henson instruments have gone through many significant changes and each new model has been greeted with great interest. I was particularly interested to hear a new version, the Henson 9000, is to be unveiled this week at Optrafair London and I jumped at the opportunity for a pre-launch view of the instrument with Professor David Henson himself.