[ '4t ] 



By this fimple mode of operating very little if any opacity- 

 can appear on the cornea ; and though forae may, yet as it is at 

 its very edge from whence the rays of light feldom are tranfmitted 

 to the bottom of the eye, no defcd can follow ; whereas by 

 incifing half the cornea from fide to fide, and not confining the 

 opening to its extremity, a very great opacity remains. I have 

 made no allowance for the efcape of the vitreous humour, be- 

 caufe it cannot pofllbly happen except the iris is wounded, and 

 a very little attention will ever prevent that. 



