1 Short description: Enlargement lymph nodes. 2  ICD-9-CM 785.6 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 785.6 should only be used for claims with a date of service on or before September 30, 2015.
Freebase (0.00 / 0 votes) Rate this definition: Hyperfocal distance. In optics and photography, hyperfocal distance is a distance beyond which all objects can be brought into an acceptable focus.
This page provides all possible meanings and translations of the word trifocal lenses. Freebase(0.00 / 0 votes)Rate this definition: Trifocals, patented in 1827 by John Isaac Hawkins, are eyeglasses where the lenses have 3 regions to correct for distance, intermediate, and near vision.