50.0 MB (602.2 KB compressed)
4997 x 3498 pixels
42.4 x 29.7 cm ⏐ 16.7 x 11.7 in (300dpi)
RUSSELL KIGHTLEY / SCIENCE PHOTO LIBRARY RUSSELL KIGHTLEY / SCIENCE PHOTO LIBRARY
This image may not be used in educational posters.
Long sightedness, computer artwork. In long sightedness the eyeball is shorter than it should be and light is focused behind the retina, causing difficulty focussing on near objects. It can be corrected by placing a convex lens in front of the eye.
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