Calculating the Distance of an Eye Chart: Tanya's Story

Thread starter leehom
Start date Jul 12, 2007
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Eye

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Tanya is positioned 2.25 meters from a mirror, which reflects her view of an eye chart located 1.75 meters behind her eyes. To calculate the apparent distance of the chart from her perspective, the total distance combines the distance to the mirror and the distance from the mirror to the chart. This results in an effective distance of 2.25 m + 1.75 m, equating to 4 meters. The problem highlights the importance of understanding optical distances in vision assessments. Accurate calculations are crucial for determining visual acuity and appropriate corrective measures.

Jul 12, 2007

leehom

Tanya is sitting in an optometrist’s chair, facing a mirror that is 2.25 m from her eyes. It the eye chart she is looking at is hanging a wall behind her head, 1.75 m behind her eyes. How far from her eyes does the chart appear to be?

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Jul 12, 2007

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