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| Study of transmission and scattering in ageing human crystalline lenses |
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| || The higher life expectancy implies that our visual system will be more successful, also taking into account that the visual demands of the elderly people in our society, are increasingly higher. Thus it is important to study and analyse the processes of ocular ageing and visual losses that are caused by age. |
One of the factors that influence visual loss from ageing is the dispersion (scattering) of the light that is produced in the aged ocular. This dispersion, not only prevents the arrival of the light directly to the retina, but produces a halo which blurs the retinal image under the contrast, which results in a loss of vision.
In this line of research we study these losses of light through dispersion, as much in human crystalline lenses, as in intraocular lenses (LIO´s) for the elderly. Depending on the case method can be used with devices such as Pentacam, or if you can have crystalline lens in vitro or LIO, through spectrophotometric techniques. These techniques allow us to measure the direct light through the sample and the total light, including the scatter in all directions through the use of the integrating sphere, deducting from the scattered light difference.