Van Norren D, Tiemeijer L F
Vision Res. 1986;26(2):313-20. doi: 10.1016/0042-6989(86)90028-3.
Spectral reflectance of the eye was assessed in four young Caucasian subjects with the Utrecht densitometer. Three retinal locations were studied, the fovea, the optic disk and a spot 12 deg temporal on the horizontal meridian. Reflectance was measured with the visual pigments bleached away. The measuring field subtended 2.5 deg. The reflectance factor, relative to an artificial eye with a focal distance of 21.3 mm, was found to be lowest in the blue (0.1% for 419 nm) and highest in the red (10% for 711 nm). A model with six parameters, four densities of (non-photolabile) ocular pigments and two reflectance factors, was proposed to explain the experimental findings. A good fit to the data was obtained and the calculated densities of the ocular pigments came close to data found in the literature.
使用乌得勒支密度计对四名年轻的白种人受试者的眼睛光谱反射率进行了评估。研究了三个视网膜位置，即中央凹、视盘和水平子午线上颞侧12度处的一个点。在视觉色素被漂白的情况下测量反射率。测量视野为2.5度。相对于焦距为21.3毫米的人工眼，发现反射率因子在蓝色区域最低（419纳米时为0.1%），在红色区域最高（711纳米时为10%）。提出了一个具有六个参数的模型，即四种（非光不稳定）眼内色素的密度和两个反射率因子，以解释实验结果。该模型与数据拟合良好，计算出的眼内色素密度与文献中的数据相近。
