advertisement
Abstract #10039 Published in IGR 5-3
Predicting glaucomatous sensitivity loss using perimetric color saturation test
Kogure S; Chiba T; Saito S; Iijima H; Tsukahara SJapanese Journal of Ophthalmology 2003; 47: 537-542
PURPOSE: To predict future glaucomatous sensitivity loss using a perimetric color saturation test (PCST) that measures the color saturation discrimination threshold for six hues (red, yellow, green, green-blue, blue, and purple) at 9° in horizontal and 3° in vertical extrafoveal points. METHODS: This new test was carried out in 31 patients (31 eyes) with early glaucoma or ocular hypertension. The sensitivity loss at the four points approximately 9.5° apart from the fixation point was prospectively evaluated annually for three years using the Humphrey Field Analyzer (HFA) program central 30-2. The initial results of PCST and the total deviation (TD) in the follow-up HFA results were compared. RESULTS: Twenty-seven patients (27 eyes) were followed up for three years. The color saturation threshold for six hues was correlated with the TD of HFA results at 108 points in the 27 eyes. TD was -4 dB or better at the baseline measurement in 91 of the 108 points. The averaged TD in the second and third years of the follow-up period decreased below -4 dB in ten of these 91 points, which were categorized as progression points in relation to the 81 non-progression points. In the initial PCST, only the saturation threshold for purple was higher in the progression points when compared to the non-progression points (p = 0.0004, Mann-Whitney U test). CONCLUSION: Future sensitivity loss is most likely at the points where the threshold of color saturation discrimination is increased for purple in eyes with early glaucoma or ocular hypertension.
Dr. S. Kogure, Department of Ophahtlmology, University of Yamanashi, 110 Shimo-kato, Tamaho, Yamanashi 409-3898, Japan
Classification:
6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (Part of: 6 Clinical examination methods > 6.6 Visual field examination and other visual function tests)