A diagnostic instrument to help field graders evaluate active trachoma

Determining whether a follicle has a diameter ≥0.5mm is difficult using magnifying loupes alone. This article explored an ultra-low-cost solution that has been developed: a follicle size guide that takes the form of a durable printed adhesive sticker which can be fixed to graders' thumb nails for direct size comparison.

Type: 
Research
Language: 
English