Measures hydrogel lens thickness in air and saline, revealing effective methods for optical calculations.
The thickness of hydrogel lenses was measured in air with a Radiuscope and in saline with a specular microscope. The measurements are in good agreement, showing that drying is not a problem with air measurement. With a simple modification to the Radiuscope, the thickness measured is satisfactory for calculating optical power and oxygen transmissibility.
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Wilson et al. (1981) studied this question.
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