All eyes on the price: An assessment of the willingness‐to‐pay for eyeglasses in rural Burkina Faso
研究在布基纳法索农村用实验方法测量成年人配眼镜的支付意愿，发现平均支付意愿接近成本，但信息不足会压低意愿，视频干预可提升16%。
Vision impairment is the most common disability worldwide and it is untreated in large parts of the developing world. We assess the willingness-to-pay (WTP) for eyeglasses among adults in a resource-poor rural setting. We elicit the WTP using the Becker-DeGroot-Marschak (BDM) method. We combine this approach with a layaway scheme and a video intervention to probe to what extent liquidity constraints and information influence the WTP. Our results show that the average WTP is close to the cost of production for corrective glasses. Nevertheless, we find evidence for information constraints. Our video intervention raises the WTP for corrective glasses by 16 percent. We do not find evidence of screening effects, that is after 6 months, use is unrelated to the initial WTP.