OPHTHALMOSCOPIC EXAMINATION 



BY practising on an enucleated eye, one may 

 gain considerable ability in the use of the 

 ophthalmoscope, and also learn to recognize 

 the blood-vessels and other important parts of 

 the retina. To'do this, the eye to be examined 

 must be very fresh, for only in this condition 

 will the cornea and lens be sufficiently clear to 

 permit rays of light to enter the inside of the 

 eye. 



However, since the pupil is oblong in shape, 

 and often only a narrow slit but several 

 millimetres in diameter the field presented 



for observation is a rather limited one. To 



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increase the pupillary aperture, take a pin, 

 and force the point through the cornea about 

 three or four millimetres from the corneo- 

 scleral junction, and at right angles to the 

 direction of the parallel edges of the pupil. 

 After the pin has been pushed through until 

 it has reached to within a short distance (one 



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