I have not seen literature about it, specifically; but your question definitively ignates ideas for Research Projects; I am wondering, it may well be part, as a category to mesure in a wider research project.
Perhaps, which elements or characteristics of instruction keep pupil's attention... and we could even go beyond, and meassure the quality of learning once the attention we find is de facto.
Is your question part of a research project?
I work with Special Educational Need pupils in a regular school context, I can tell you that challenges with an adecuated level of difficulty are quite engaging, as well as if they are out of the classroom monotony.
Besides, I've worked with 15 - 18 year old studenta, preparatory; and the same way, those characteristics I mentioned with SEN pupils are the same these enjoy and helped me keep their attention.
And I also teach in Medicine schools and those characteristics are shared too.
Visual-attention disorders affecting reading, most often from Grade 2 onwards, are not only related to attentional function disorders.
As you will see, it is not a problem of oculo-motor fixation either, but rather a deficit of the visual span as described by the authors (article in PJ)