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.
Reasons for Prescribing Bifocals. Presbyopia. Presbyopia is Latin for old sight. It is the culmination of a loss of. accommodation that starts about age 10 and gets to be a problem about. age 40 for an emmetrope or corrected ametrope, sooner for an uncorrected. hyperope. Therapy for this is a near prescription in the form of reading. glasses or a bifocals. The difference between the distance and near. prescription is called the add. A simple formula for the add power is. add power(D)=age/8-5.00Â±0.25. where the add is the difference between near and distance prescriptions.