| 11. | Eye strain, light-headedness and a Costas-intolerance are all common symptoms.
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| 12. | But he gave up engraving because of eye strain.
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| 13. | The MKH method claims to reduce eye strain-related symptoms.
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| 14. | Glare and brightness ratios provide guidelines for lighting schemes within libraries to minimise eye strain.
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| 15. | Pure black and pure white background are known to cause eye strain for normal users.
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| 16. | The results might suggest that early eye strain promotes nearsightedness, which would reinforce Kennebeck's belief.
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| 17. | Failure to heed this advice may cause eye strain.
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| 18. | :You can get eye strain reading a book for too many hours in a row too.
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| 19. | The program is free software, and is intended to reduce eye strain as well as insomnia.
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| 20. | Remember eye strain, command lines, tape recorders and cassettes for data storage and archaic machine symbols?
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