Explain why accumulation of glucose within the lens results in the uptake of water.?
I've been given some past paper questions to help me revise for my human biology exam, but I'm stuck on this question and cannot find the mark scheme anywhere! Please can somebody help me?! If insulin does not work efficiently, diabetes mellitus may develop. One of the early symptoms of this disease is a blurring of vision caused by a build up of glucose in the lens of the eye, which is accompanied by the uptake of water. This distorts the shape of the lens. Explain why accumulation of glucose within the lens results in the uptake of water. [3 marks]
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The presence of the glucose will lower the water potential of the lens and so water will enter by osmosis since it moves from high to low water potential.