Moderate evidence was observed for : ( 1 ) no effect of workstation adjustment , ( 2 ) no effect of rest breaks and exercise and ( 3 ) positive effect of alternative pointing devices .
For all other interventions mixed or insufficient evidence of effect was observed .
Conclusion : Few high quality studies were found that examined the effects of interventions in the office on musculoskeletal or visual health
Background : The literature examining the effects of workstation , eyewear and behavioral interventions on  musculoskeletal and visual symptoms among computer users is large and heterogeneous .
Methods : A systematic review of the literature used a best evidence synthesis approach to address the general question “ Do office interventions among computer users have an effect on musculoskeletal or visual health ? ”
Use of keyboards and symptoms in the neck and arm: evidence from a national survey.
The objective of this study was to examine the relationship between upper limb symptoms and keyboard use in a population survey . A question naire was mailed to 21,201 subjects aged 16 - 64 years , selected at r and om from the registers of 34 British general practice s. Information was collected on occupation and on regular use of keyboards ( for > 4 h in an average working day ) , pain in the upper limbs and neck , numbness or tingling in the upper limbs , headaches , and feelings of tiredness or stress . Associations were explored by logistic regression , with the result ant odds ratios converted into prevalence ratios ( PRs ) . Among 12,262 respondents , 4899 held non-manual occupations . These included 1871 regular users of keyboards ( e.g. computer operators , data processors , clerks , administrators , secretaries and typists ) .  Pain in the neck or upper limbs and sensory symptoms were common in the non-manual workers overall ( with 1 week period prevalences of 30 and 15 % , respectively ) , and were associated with older age , smoking , headaches and tiredness or stress . After adjustment for these factors , regular keyboard use was significantly associated with pain in the past week in the shoulders ( PRs 1.2 - 1.4 ) and the wrists or h and s ( PR 1.4 ) , but not with elbow pain or sensory symptoms over the same period , or with neck or upper limb pain that prevented normal activities in the past year . Disabling symptoms were somewhat less prevalent among symptomatic keyboard users than among other symptomatic workers . We conclude that use of keyboards was associated with discomfort at the shoulder and wrist or h and , but risk estimates were lower than generally reported in workplace surveys . Previous estimates of risk in the occupational setting may have been biased by shared expectations , concerns , or other aspects of illness behaviour
Moderate evidence was observed for : ( 1 ) no effect of workstation adjustment , ( 2 ) no effect of rest breaks and exercise and ( 3 ) positive effect of alternative pointing devices .
For all other interventions mixed or insufficient evidence of effect was observed .
Conclusion : Few high quality studies were found that examined the effects of interventions in the office on musculoskeletal or visual health
Background : The literature examining the effects of workstation , eyewear and behavioral interventions on  musculoskeletal and visual symptoms among computer users is large and heterogeneous .
Methods : A systematic review of the literature used a best evidence synthesis approach to address the general question “ Do office interventions among computer users have an effect on musculoskeletal or visual health ? ”