| 摘要 |
A vision-testing device is disclosed that measures glare, macular photostress, and the blue-field entopic phenomenon. Utilizing a mirror, the effective brightness of a small energy efficient light bulb is increased which allows a compact assembly. One embodiment places lights in the line of vision to closely duplicate the glare experience from on coming automobile headlights. The invention provides for testing glare under diffuse and focal lighting conditions which closely mimic environmental lighting conditions.
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