When testing the Dial Indicator, one of the points must be near. the lower limit that the instrument can measure, another somewhere. in the middle, and the third near the upper limit. 4. Use a conversion factor of 25.40 mm/in to convert gauge block.
Eyelid swelling has many causes (see Some Causes of Eyelid Swelling). It usually results from an eyelid disorder but may result from disorders in and around the orbit or from systemic disorders that cause generalized edema. The most common causes are allergic, including.
Here are the 5 most common benign eyelid growths: 1  Stye or Chalazion A stye or chalazion is a blocked oil gland that causes that eyelid to be red, tender, and inflamed. 2  Epidermal Inclusion Cyst An epidermal inclusion cyst is a common benign cystic growth that commonly occurs on the eyelids.