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Archer suggests that the eye is adapted to varying distances principally by an alteration in the fibrous arrangement of the lens itself, and that when the lens is removed after an operation for cataracts, the power of adaptation is nearly lost, and can only be exerted within very confined distances. He further states that the purpose of focalising light at short distances is assisted by the contractions of the ciliary muscle, in its antero-posterior direction, bringing forward the ciliary processes.

Annotations in pencil throughout.

Subject: Physiology / Optics

Received 17 June 1858. Communicated by George Gabriel Stokes.

Written by Archer at Medical College Hospital, Calcutta [Kolkata, India].

Whilst the Royal Society declined to publish this paper in full, an abstract of the paper was published in volume 9 of the Proceedings of the Royal Society as 'On the adaptation of the human eye to varying distances'.

An abstract of this paper was published by Archer in The Dental Register: Archer, Charles. 'Adaptation of the Human Eye to Distances.' The Dental Register, volume 13, number 7 (1860), pp. 324-325.

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Physical description
Ink and graphite pencil on paper
Page extent
13 pages

Creator name

Charles Archer

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Charles Archer, Unpublished paper, 'Adaptation of the human eye to varying distances' by Charles Archer, 1858, AP/41/1, The Royal Society Archives, London,, accessed on 23 May 2024

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    Dates: 1768-1989

    The 'Archived Papers' collection is comprised of original manuscript scientific papers and letters submitted to the Royal Society which remained unpublished or were abstracted in the journal 'Proceedings of the Royal Society' published from 1830 onwards.

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