One by one as the villagers came up to our table, we handed each of them a laminated sheet with an eye test on it. The test was set up so that it even worked for people who didn't know how to read, regardless of which languages they spoke.
Then the villager with the laminated sheet was offered a pair of sample glasses and took the test again. Right there, instantly, he or she could see perfectly. That's how glasses work. It wasn't a new technology for these men and women or an untrusted one.
1 came up to table 到我们的桌子边
2 a laminated sheet 层压板
3 regardless of 不管...
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