ON DISEASES OF TPIE EYES. 4g^ 



refultlng from fuperaftriftion, and the known 

 poifonoLis quality of lead. 



His collyriums alfo, I think much too firong 

 and fharp, and fuch as I am convinced would 

 injure any of thofe horfes eyes with which I 

 have been acquainted, and they have not been 

 few. 'Gibfoa makes a moderate ufe of lead in 

 his prefciiptions, juftly obferving, that the eye 

 is very delicate, and in a recent hurt fcarcely 

 able to endure the common eye-v.-aters. Dr. 

 Darwin fpeaks againft the too early u^c of fti- 

 mulatir^g eye-waters in opthalmy. and recom- 

 mends afterwards the folution of vitriol, in 

 preference to that of lead. Bold meafures, it 

 is pretended, fucceed well with the eyes of 

 horfes, but luch pretenfions m.uft be received 

 -w'nh. caution ; the eye is a very delicate organ, 

 to what animal foever it may belong. 



I have been in the conftant habit of uGne 

 Goulard's Extract, about eighteen years, not 

 only upon horfes and other animals, but upon 

 my own perfon.. From the unfortunate cuflom 

 of writing by candle-light, and the unpardon- 

 able omilfion of any kind of guard for the 

 eyes, 1 have experienced a gradual diminution 

 of fight about four years. I had always leaft 

 fight in my left eye, and about three years 

 fmce, after writing late the preceding night, I 

 walked to fee the (katers upon the ice in St. 

 James's Park, where, on a fudden, I perceived a 



difa^rceable 



