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The Snellen’s Chart


The vision is what we see. There are two parts of the vision.

1. The central vision or the visual acuity – the area which we want to see and focus our eye on. This is commonly measured with a chart (Snellen’s chart) which you are shown and asked to read.

2. The peripheral vision or the field of vision – the area which is around the point and is visible to us without any voluntary effort. This is measured with a Visual Field Analyser under special circumstances.

The complete panoramic picture thus seen forms the vision.

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