This book is largely aimed at visual field technicians with the intention of providing them with the knowledge and skill required to produce visual field examinations of good quality.

Although several techniques and machines are discussed, emphasis is mainly on the use of the Humphrey visual field analyser. The authors introduce the reader to a brief description of the anatomy of the visual system with illustrations of basic defects patterns, then proceed to explain, in great detail, how to organise a visual field clinic and also give clear guidelines on how to administer the test. The instructions are full and comprehensive, including data storage and retrieval, setting up the machine, selecting corrective lenses, patient information, and a 15 point checklist for technicians.

The next section deals with errors in visual field testing and how to avoid them. It covers maintenance of automated and Goldmann perimeters, stimulus selection, monitoring of false positive responses, and others.

The last section is an “Atlas of common visual fields defects” covering glaucoma, retinal and neurological disease.

As an instructional book on how to use the Humphrey visual field analyser, it should be welcomed by technicians with limited experience in automated perimetry. However, regrettably, the Swedish Interactive Thresholding Algorithm (SITA) is not mentioned.

The latest issue of Community Eye Health (no 30) discusses external infections of the eye. Included are papers on conjunctivitis, corneal ulcer, and transmission and control of …