Diagnosis

Prism testing

Prisms bend light, changing the object’s position. Because of this property, they are commonly used to detect and measure strabismus (turned or crossed eye). While the patient is staring at an object, prisms of increasing strength are placed over the turned eye until it is aligned with the fellow eye. The stronger the prism that is required to align the eyes, the greater the eye turn.

<< Back to diagnosis
 
         
 
 
   
 
 

 

 

 

 

 

  
 
 
Some contents are property of their respective owners and contributors and may be protected by copyrights ©. We are not responsible for any mistakes in information materials, written or any other kind.