| 摘要 |
A device which is designed to test applanation type tonometers. The device includes a reservoir to maintain a constant liquid level mounted on top of a liquid filled vertical column having multiple connections with outlet means closed by thin membranes with characteristics so that a known liquid pressure deforms the membrane in a bulbous shape approximating the contour of the human eye which thus provides said device with the means for testing applanation type tonometers.
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