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Abstract #6386 Published in IGR 3-2
Effect of cataract extraction on blue-on-yellow visual field
Kim YY; Kim JS; Shin DH; Kim C; Jung HRAmerican Journal of Ophthalmology 2001; 132: 217-220
PURPOSE: It is assumed that cataract can influence the results of blue-on-yellow (B-Y) perimetry. However, actual sensitivity change in B-Y perimetry before and after cataract surgery has not been fully demonstrated. METHODS: Prospective. SETTING: Institutional. STUDY POPULATION: Twenty-two eyes of 22 consecutive patients without ocular pathology, other than cataract, known to influence visual field, undergoing cataract surgery. OBSERVATION PROCEDURES: Both white-on-white and B-Y perimetry. MAIN OUTCOME MEASURES: Global indexes included mean deviation and other pertinent data of W-W and B-Y perimetry were compared before and after cataract surgery. RESULTS: Mean deviation was improved after cataract surgery in both W-W (from -6.88 to -3.36 dB, p < 0.0001) and B-Y (from -12.22 to -3.64 dB, p < 0.0001, paired t test) perimetry. However, the mean difference between pre- and postoperative mean deviation in B-Y perimetry (8.58 ± 3.96 dB) was significantly higher than that of W-W perimetry (3.52 ± 2.69 dB; p < 0.0001, unpaired t test). That is, the change in mean deviation was greater in B-Y than in W-W perimetry by a factor of 2.4 times. CONCLUSION: Cataract predominantly causes a general reduction of sensitivity in both B-Y and W-W perimetry, and the general reduction of B-Y sensitivity is far greater than that of W-W sensitivity.
Dr D.H. Shin, Kresge Eye Institute and Wayne State University School of Medicine, 4717 St Antoine Boulevard, Detroit, MI 48201-1423, USA. dongshin@med.wayne.edu
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)
12.12.3 Phacoemulsification (Part of: 12 Surgical treatment > 12.12 Cataract extraction)