Predicting Humphrey 10-2 visual field from 24-2 visual field in eyes with advanced glaucoma

Autor: Yoshio Yamazaki, Aiko Iwase, Makoto Araie, Keiji Yoshikawa, Akiyasu Kanamori, Toshihiro Inoue, Hodaka Nemoto, Ryo Asaoka, Kenji Sugisaki, Shinichiro Ishikawa
Rok vydání: 2019
Předmět:
Zdroj: The British journal of ophthalmology. 104(5)
ISSN: 1468-2079
Popis: AimsTo predict Humphrey Field Analyzer Central 10-2 Swedish Interactive Threshold Algorithm-Standard test (HFA 10-2) results (Carl Zeiss Meditec, San Leandro, CA) from HFA 24-2 results of the same eyes with advanced glaucoma.MethodsTraining and testing HFA 24-2 and 10-2 data sets, respectively, consisted of 175 eyes (175 patients) and 44 eyes (44 patients) with open advanced glaucoma (mean deviation of HFA 24-2 ≤−20 dB). Using the training data set, the 68 total deviation (TD) values of the HFA 10-2 test points were predicted from those of the innermost 16 HFA 24-2 test points in the same eye, using image processing or various machine learning methods including bilinear interpolation (IP) as a standard for comparison. The absolute prediction error (PredError) was calculated by applying each method to the testing data set.ResultsThe mean (SD) test–retest variability of the HFA 10-2 results in the testing data set was 2.1±1.0 dB, while the IP method yielded a PredError of 5.0±1.7 dB. Among the methods tested, support vector regression (SVR) provided a smallest PredError (4.0±1.5 dB). SVR predicted retinal sensitivity at HFA 10-2 test points in the preserved ‘central isle’ of advanced glaucoma from HFA 24-2 results of the same eye within an error range of about 25%, while error range was approximately twice of the test–retest variability.ConclusionApplying SVR to HFA 24-2 results allowed us to predict TD values at HFA 10-2 test points of the same eye with advanced glaucoma with an error range of about 25%.
Databáze: OpenAIRE