Gothic fiction is characterised by an atmosphere of suspense or mystery, shown in this case when the writer is saying that "something painful had met his eye".
Moreover, the word "tormented" when describing how the character feels and the phrase "a sudden jrk" when describing how he reacts, create the image of the character being afflicted and even frightened by something, which is also a characteristic of Gothic fiction. 
The whole paragraph is conveying mystery, fright and even darkness.
 
        
                    
             
        
        
        
Answer:
The Eloi were masters and the Morlocks were their servants.
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