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Transmission measurements of human lenses

The transmission properties of the human lens were studied in donor lenses from the age of 17 to 76 years. The transmission of white light was measured using a fiber coupled tungsten halogen lamp. The light transmitted by the lens was collected using an integrating sphere that was coupled to a spectrometer by an optical fiber. As expected, the transmission of blue and green light decreased in older lenses. The transmission of the near infrared part of the spectrum was above 90% even in old donor lenses.