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Giuliano Stramare; A new computerized Hess- Lancaster red-green test. Invest. Ophthalmol. Vis. Sci. 2017;58(8):2930. doi: https://doi.org/.
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to validate a new computerized Hess-Lancaster red-green test (Hess-Lancaster computerized DigiTest (HLDT)) and to compare it with the conventional test.
130 patients were asked to plot Hess charts by using both the conventional test and the HLDT, administered in random order. We recorded the time taken to complete each test. Patients were asked to grade the degree of difficulty of the 2 tests, by answering 3 different questions. The first two consisted in the evaluation of the ease of understanding and performing the test with a scoring system 1-10. In the third one the patients were asked which one they preferred.In a smaller group (30 patients) we evaluated the agreement between the measured horizontal and vertical deviations obtained in both the tests.
Mean time taken to complete tests was 185 seconds with HLDT and 302 seconds with conventional test. 80% of patients preferred to performe HLDT, 13,33% had no preference and just 6,66% preferred traditional test. The measured horizontal and vertical deviation showed good agreement with both HLDT and conventional test.
The deviations measured with both the test were in good agreement. HLDT is faster then taditional test and patient found easier to perform it.
This is an abstract that was submitted for the 2017 ARVO Annual Meeting, held in Baltimore, MD, May 7-11, 2017.
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