Dr. Carl Becker, a researcher of near-death experiences, documented at least a hundred cases in China and Japan of people who claimed to see visions of Amida or the Pure Land on their deathbed:
In the 1970s, Prof. Becker found other people studying near-death experiences in the United States. With hints from the renowned death specialist Dr. Elizabath Kubler-Ross, he helped to found the International Association of Near Death Studies. In the process of this study, researchers found the need to coin the new term “figure of light” which they found common across various cultures. Hospital research around the world has shown that this “figure of light” is experienced by many dying people. This is not just a belief, but has been well documented over the past 30 years worldwide and the last 15 years in Japan. This is hardly surprising, since Japan has a long tradition of this belief in Pure Land practice, but such studies have been slow to permeate modern Japanese medicine...
Prof. Becker then showed a video on Near Death Experience (NDE) from Japanese television for which he acted as a consultant. In many NDEs, people speak of being (re)born through a tunnel of light, which image matches the Pure Land account of being (re)born through the calyx of the lotus into the Pure Land. There are many accounts of natural and flowery images as in the Pure Land. These are difficult to attribute solely to anaesthesic drugs, since such drugs tend to create architectural and geometrical images, and most experiencers had not received medication in the first place. Many NDEs in hospitals cannot be explained as delusions or dreams; there are many documented incidents of soldiers who were seen by their wives in their homes at the moment that they were mortally wounded on distant battlefields. We know that such phenomena can occur, but we don’t know how.
http://www.jsri.jp/English/ojo/round1/day2morn.html