Thursday, June 22, 2017

Pills of knowledge in Ophthalm- Nodal cataract

The condition where 'day blindness' is present is a cataract at the nodal point. Nodal point of the eye is where the rays of light pass through the lens without any refraction, usually at the centre of the lens. Thus, during the day, especially when out in the sun, the pupil contracts and the light has to pass through the cataractous area, causing diminution of vision.


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