Griswold M S, Stark W S
Division of Biological Sciences, University of Missouri, Columbia 65211.
Vision Res. 1992 Sep;32(9):1739-43. doi: 10.1016/0042-6989(92)90166-g.
Despite interest in ultraviolet (UV) damage and UV vision in lower vertebrates, there are few recent publications on human UV sensitivity. We obtained dark-adapted spectra from 4 aphakic and 5 normal eyes at 8.8 degrees off-fovea using the staircase method. Our measurements extended from 314.5 nm, near the limit imposed by corneal UV absorbance, to 650 nm. Phakic and aphakic sensitivities resembled the traditional rod spectrum at long wavelengths with a peak around 500 nm. However, aphakic subjects were much more sensitive than phakic observers below 420 nm. From phakic volunteers ranging in age from 22 to 43 we deduced lens absorbance which depressed sensitivity at 350 nm by approx. 4 log units (n = 7 phakic runs on 5 eyes, average age = 30) as expected. We show a maximum lens absorbance at 355-360 nm and a UV window in the lens absorbance at 315 nm consistent with data on optical density of human lenses.
尽管人们对低等脊椎动物的紫外线（UV）损伤和紫外线视觉很感兴趣，但近期关于人类紫外线敏感性的出版物却很少。我们使用阶梯法，在偏离中央凹8.8度的位置，从4只无晶状体眼和5只正常眼中获得了暗适应光谱。我们的测量范围从314.5纳米（接近角膜紫外线吸收率所限制的极限）到650纳米。有晶状体眼和无晶状体眼的敏感度在长波长下类似于传统的视杆光谱，峰值在500纳米左右。然而，在420纳米以下，无晶状体眼的受试者比有晶状体眼的观察者敏感得多。从年龄在22至43岁之间的有晶状体眼志愿者中，我们推导出晶状体吸收率，其使350纳米处的敏感度降低了约4个对数单位（对5只眼睛进行了7次有晶状体眼测量，平均年龄 = 30岁），正如预期的那样。我们展示了在355 - 360纳米处的最大晶状体吸收率以及在315纳米处晶状体吸收率的紫外线窗口，这与人类晶状体光密度的数据一致。
