Vital Signs – New Glasses

Vital Signs – New Glasses

During the first day of bioengineering activities, our campers created glasses! They first made observations on the differences between convex and concave lenses, and how each helped with seeing close or far distances. Glasses can have one or both types of lenses depending on the sight issue of the person, such as near-sightedness and far-sightedness. To test how the lenses acted together, the campers experimented with different magnifications and lens types to try and see down to the smallest line of an official eye chart. 

Ask your camper: What is the difference in shape between a convex and concave lens, and which lens combination worked best to see the smallest line of the eye chart? A convex lens bulges out, while a concave lens curve in, like a cave. One of each lens created the most ideal combination. 

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