Related Clues:

• Certainly in English school pupils are involved in such trouble
• It might cause pupils problem, of course, in English school
• Discomfort of sightseers right inside Orient Express?
• Problem, indeed, damaged retina's brought about
• Looks at what instructor does which makes it hard to see
• Surveys school for tiredness of pupils
• English tutor admitting rather a problem caused by too much reading?
• Tension on the visual organ
• Optic stress
• Overlooking trouble
• The visionary effect of key positive coaches
• Damaged retina, yes, causes visual impairment
• Problem of retina? Yes, possibly
• Vision tiredness
• Fourth letter in chart -- see it any differently? The reason?