Biomaterial Database

An over-refraction program for the TI 59 card-programmable calculator. 1979

J H Carter

Over-refraction provides a powerful method for the refractive examination of the aphakic or highly ametropic patient. Nevertheless, in the past, practical difficulties that attend mathematical or graphical combination of over-refraction and original spherocylinders have tended to limit the clinical use of over-refraction methods. Programmable calculators, now available inexpensively, render over-refraction clinically practical. An over-refraction program for the Texas Instruments TI-59 Card-Programmable Calculator is presented. Program running time, exclusive of data entry and readout, is under 15 sec.

UI	MeSH Term	Description	Entries
D012029	Refraction, Ocular	Refraction of LIGHT effected by the media of the EYE.	Ocular Refraction,Ocular Refractions,Refractions, Ocular
D012030	Refractive Errors	Deviations from the average or standard indices of refraction of the eye through its dioptric or refractive apparatus.	Ametropia,Refractive Disorders,Ametropias,Disorder, Refractive,Disorders, Refractive,Error, Refractive,Errors, Refractive,Refractive Disorder,Refractive Error
D003201	Computers	Programmable electronic devices designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results of these operations.	Calculators, Programmable,Computer Hardware,Computers, Digital,Hardware, Computer,Calculator, Programmable,Computer,Computer, Digital,Digital Computer,Digital Computers,Programmable Calculator,Programmable Calculators
D003936	Diagnosis, Computer-Assisted	Application of computer programs designed to assist the physician in solving a diagnostic problem.	Computer-Assisted Diagnosis,Computer Assisted Diagnosis,Computer-Assisted Diagnoses,Diagnoses, Computer-Assisted,Diagnosis, Computer Assisted
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001036	Aphakia, Postcataract	Absence of the crystalline lens resulting from cataract extraction.	Aphakic Eye, Postcataract,Aphakias, Postcataract,Postcataract Aphakia,Postcataract Aphakias,Postcataract Aphakic Eye,Postcataract Aphakic Eyes