An impartial inquiry into the seat of the immediate organ of sight. Viz. whether the retina or choroïdes. Being the subject of a lecture, in a course lately given on the nature and cure of the diseases of the eye ... / [John Taylor].

  • Taylor, John, 1703-1772
Date:
1743
Catalogue details

Licence: Public Domain Mark

Credit: An impartial inquiry into the seat of the immediate organ of sight. Viz. whether the retina or choroïdes. Being the subject of a lecture, in a course lately given on the nature and cure of the diseases of the eye ... / [John Taylor]. Source: Wellcome Collection.

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    we muft lofe a Proportion of the Diftindion of fuch Objeds; lince fuch Points, which thus fall, muft be abfolutely wanting to the Perfedion of fuch Impreffion ; and to fay that the Retina may receive the Impreffioa of the Objeds diftindly, and yet tranfmit the Light to thefeems abfurd, not only from there being only one Point where any one Point of the Objed can be diftindly imprefled, but from the Confequence that muft follow fuch a double Impreffion, with Refped to the Perfedion of Vifion : That the Rettna and Chovo'ides both feem to receive diftindly this Impreffion from the common Experiment of a Candle held at a proper Diftance from the Eye, we do not deny; but then we are to make a great Difference (as I have faid) between the Tranfparency of the Retina in a living Eye, and when dead : For tho’ from its Opacity when dead it does receive the Impreffion of the Image, it is very much to be doubted, if it be capaWe of doing fo when living ; and without any Regard to the Difference of Colour between the Retina and Cboro'ides we always find, that the Impreffion of the Image is more diftind in the Choroides than the Retina. As to the other Argument, I mean that Ante to the jrom the Progrefs of thefcNerves deftined for Argument the Service of the Irh in and about the Optic fhTftogrdi !Nerve, it does not feem to carry any greater® Nerves Weight than the Preceeding, for all that proves