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.
the distance between the right and left binocular. parfocal. The term used when your microscope is parfocal means when a specimen is in focus with one objective, it will be approximately in focus with other objectives. Thus it will take minimal amount of refocusing to bring the image into sharp focus on high power.