Publisher's Synopsis
Excerpt from The Means by Which the Eye Adapts Itself to Distinct Vision, at Different Distances
The focal distance, as adjusted by the lens, is, comparatively speaking, fixed, varying only in different individuals, and at different periods of life in the same individual.
About the Publisher
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This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
