What characteristics a clinical CSF system has to have

Corresponding author: lissolio@herrera.unt.edu.arWe discuss the characteristics a system to measure the contrast sensitivity function (CSF) inthe ophthalmologic clinic has to have. We propose that this system should be computer basedin order to assure flexibility and precision. Besides the original calibration, this equipment needsan auxiliary system to keep the working conditions allowing periodical gamma corrections. Wetry a calibration method based on visual comparisons and show that it is valid and simple.We propose to use an adaptive psychophysical method to obtain contrast thresholds thatassure a good compromise between precision and duration of the whole test. Finally, we proposethat the system has to have its own normality curves for the different age ranges allowingthe practitioner to perform clinical evaluations. Summing up, we can say that taking into accountthe above issues, the fidelity of the stimuli will be guaranteed and the challenges entailed in itstransference to the clinic will be overcome.Keywords: contrast sensitivity, ophthalmologic clinic, standards.

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