Accuracy of dietary intake assessments using food records based on photographic images captured by visually impaired people.

Traditional methods to assess dietary intake have limited and questionable application in visually impaired people since the lack of vision and low leading role in their diet make it difficult to quantify and detail the food consumed throughout the day. Thus, this study investigated whether it is possible to accurately identify foods and estimate their quantities using food records based on photographic images captured by visually impaired people. A panel of experts composed of nutritionists (n = 20) assessed these records comprising three standardized meals (breakfast; lunch/dinner; snack) from visually impaired people (n = 40) using two different protocols (frontal photo; aerial photo).

Development and validation of protocols for photographed food record by visually impaired people.

Objective: To develop and validate protocols for photographed food record directed to visually impaired people.

Design: Photographic techniques were established for capturing food images using a smartphone, and written protocols were defined. Thereafter, visually impaired people made photographic records of three standardised meals (breakfast, lunch/dinner, and snack) following the previously developed protocols.