Comparison Of Horizontal Phorias And Fusional Vergance Ranges Measured On Computer Orthoptics Diagnostic Program With Standard Methods Of Measurement.

In recent years various computer programs have been developed for optometrists for use in diagnosing and treating various oculomotor anomalies. In 1985 Jeffrey Cooper O.D., M.S., F.A.A.O. developed such a package called Computer Orthoptics. Computer Orthoptics is a
computer package which presents complex binocular and oculomotor stimuli for orthoptics testing and training. Computer Orthoptics contains a diagnostic program and a training program. The Computer Orthoptics Diagnostic Program (CODP) was created to
allow either a trained or non-trained technician to automatically measure horizontal and vertical phorias, stereopsis on random dot stereograms, fusional ranges and accommodative facility. Measurements are automatically recorded and may be printed for
permanent storage and documentation. Computer Orthoptics has also been promoted because of the fact it creates better test, re-test repeatability. Extensive study has not been to compare measurements obtained using CODP with standard methods. The purpose of this paper is to measure horizontal phorias at 20'' using the standard in phoropter Von Graefe method and compare this measurement with the measurement obtained using each of three targets on the CODP. The measurements were made on 30 subjects with ages ranging from 20-30 years old. Comparison of fusional vergance range measurements at 20" using the standard in phoropter Risley prisms will also be made to fusional vergance range measurements using each of four COPD targets. These measurements will be made on the same 30 subjects.