Editing Thomas Young (scientist) (section)

===Vision and colour theory===
Young has also been called the founder of physiological optics. In 1793 he explained the mode in which the eye [[accommodation (eye)|accommodates]] itself to vision at different distances as depending on change of the curvature of the [[lens (vision)|crystalline lens]]; in 1801 he was the first to describe [[Astigmatism (eye)|astigmatism]];<ref>{{cite journal | url = https://books.google.com/books?id=3I9JAAAAYAAJ&pg=PA23-IA3 | title = On the mechanics of the eye | journal = Philosophical Transactions of the Royal Society | volume = 91 | year = 1801 | pages = 23–88 | first = Thomas | last = Young|bibcode = 1801RSPT...91...23Y | doi = 10.1098/rstl.1801.0004 | doi-access = free }}</ref> and in his lectures he presented the hypothesis, afterwards developed by [[Hermann von Helmholtz]], (the [[Young–Helmholtz theory]]), that colour perception depends on the presence in the retina of three kinds of nerve fibres.<ref name="EB1911" /><ref>{{cite journal|author=Young, T.|year= 1802|title= Bakerian Lecture: On the Theory of Light and Colours|journal=Phil. Trans. R. Soc. Lond.|volume= 92|pages=12–48| doi= 10.1098/rstl.1802.0004|doi-access= free}}</ref> This foreshadowed the modern understanding of [[colour vision]], in particular the finding that the eye does indeed have three colour receptors which are sensitive to different wavelength ranges.