574 DISORDERS 



are included) can afford but very slender in- 

 telligence to the literary inquirer; as such a 

 wonderful variety of minute distinctions can- 

 not be comprehended by description, a just 

 and accurate discrimination of parts being 

 only to be acquired by attentive and re- 

 peated dissections. 



We shall, therefore, for the advantage of 

 general comprehension, consider the eye in 

 its external appearance only, with the dis- 

 eases and injuries to which it is liable, revert- 

 ing occasionally to the great delicacy of its 

 str^icture, and the exquisite sensibility of the ^ 

 parts that constitute the whole. The su- 

 perficial description, taken into considera- 

 tion, becomes divested of technical jargon, 

 and distinctly comprehended by every indi- 

 vidual in possession of the blessing of sight; 

 \ipon which basis may be formed a very fair 

 idea, blendinoan occasional reference to their 

 own sensations ; with such explanations as 

 will be introduced to make the different de- 

 grees of disease sufficiently understood. 



Previous to every additional observation, 

 it becomes indispensably necessary to intro- 



