An Investigation of the Height of Embossed Braille Dots for Labels on Pharmaceutical Products

The perception and use of technology within braille instruction: A preliminary study of braille teaching professionals

“…This may be partially explained by the different needs of some older clients using braille for limited labeling purposes, rather than for longer and more extensive reading. Douglas et al (2009) as well as Cryer and Home (2011a) suggest that decisions about braille instruction in general may also be influenced by misconceptions about the abilities of older learners. To date, no research on the potential benefit of such technologies when teaching braille to aging learners is available, though such investigations would be worthwhile to pursue as technology will continue to play an increasing role in the lives of older adults.…”

“…Less is known about braille instructional trends among adult and senior learners with acquired vision loss, and those studies which have been conducted focus largely on the experience of the braille user. In contrast to students with visual impairments, the variability of braille instructional services and equipment available for adult and senior clients is more restricted and dependant on geographic location and funding models (Douglas, Franks, Weston, & Clements, 2009). In a study by Cryer and Home (2011b), 13 adult braille users cited advantages to using braille display technologies such as portability and the ability to access the Internet and a variety of reading materials.…”

Effect of modulating braille dot height on reading regressions

“…Our medium dots of 0.18 mm were obviously not near the threshold, since our results were hardly different than the ones obtained in the high dot condition. This height has also been shown to be easily read by many braille readers (71%) [52].…”

Development of a novel three‐dimensional printing technology for the application of “raised” surface features

“…4 Typically, Braille is printed by an embossing machine giving an image height of 0.794 mm, but these machines are too expensive for general home use. [5][6][7] Although it is reasonable to use this height dimension as a minimum requirement for any ink-jet-printed Braille research development, there is some ambiguity concerning this target height. In the UK, the minimum standard for "touch" reading set by the Royal National Institute for the Blind is a print height of 0.46 mm but in practice it is more likely to be 0.25 mm.…”

“…Typically, Braille is printed by an embossing machine giving an image height of 0.794 mm, but these machines are too expensive for general home use 5‐7 . Although it is reasonable to use this height dimension as a minimum requirement for any ink‐jet–printed Braille research development, there is some ambiguity concerning this target height.…”