Fundamentals of ophthalmic dispensing part 15: Visual task analysis – part 1

Abstract

At its simplest level a visual task analysis can be considered an assessment of the interaction between a patient, their optical appliance and the visual elements of their environment – the things they are trying to see and do. In this, the first of two articles, Peter Black introduces the topic and tackles the often confusing subject of photometry bringing it up to date for a world illuminated by low energy light bulbs.