A Learned Gentleman coming once to visit me, with design, as I afterward’s perceive’d, to hear my Opinion concerning an odd Distemper he had in his Eyes; I found, by Discoursing with him concerning the Phaenomena of his Disease, that tho’, when he look’d on Objects near at hand, he Saw them somewhat Dimly, but yet Single, yet, there were some Objects, particularly Posts and Rails, which, when he beheld at a certain distance (which was not very great) they appear’d to him both more Dark and Double. I found also that he complained of divers Black Flyes and litle Leaves, that pass’d now and then before his Eyes; which, tho’ they do not always fore-bode a True Cataract, since Others and I also have observ’d them to continue many years without being more than a Bastard Suffusion (as Physicians Speake) yet in him they were probably Forerunners of a True Cataract; in regard that I have known it observ’d by a skilful Oculist, that some Persons, before their Cataract, have complain’d that at some Distances they saw Objects almost Double; so that looking at ones Head, they thought they Saw a great part of a Dark Head a little above it: which Description, whether it proceeded from some Refractions made by the yet not Uniformly Opacous Matter of the Cataract, not having opportunity to examine those Persons my self, I dare not Venture to say.
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