| ERF | Education and Research Foundation; external rotation in flexion; Eye Research Foundation |
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| FACES | unique facies, anorexia, cachexia, and eye and skin lesions [syndrome] |
| FBCOD | foreign body of the cornea, oculus dexter (right eye) |
| FBCOS | foreign body of the cornea, oculus sinister (left eye) |
| FED | fish eye disease |
| Listing's reduced eye | A representation that simplifies calculations of retinal imagery: radius of anterior refracting surface, 5.1 mm; total length, 20 mm; distance of nodal point to retina, 15 mm. (05 Mar 2000) |
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