Seeing for yourself: feasibility study towards valuing visual impairment using simulation spectacles
通过小规模时间权衡实验，测试用塑料眼镜模拟视力障碍状态来替代传统文字描述进行健康效用评估的可行性，发现该方法可行但需注意受访者可能混淆模拟状态与自身健康。
Elicitation of utilities from members of the public generally uses verbal description of health states. This paper reports the results of a small-scale time trade-off study on the feasibility of an alternative approach, where health states were simulated using plastic spectacles. This approach has methodological implications for the valuation exercise, in that many respondents find it difficult to conceive of visual impairment alone, without referring to their own current health. We conclude that it is feasible to simulate visual impairment in valuation exercises, but care must be taken to ensure what health state is effectively being valued.