Clinical Usefulness of Central 24-2 Full Th reshold Test-Comparison between Central 24-2 and Central 30-2 Full Threshold Test in Glaucoma Patients

ABSTRACT

We compared the clinical performance of central 24-2(C-24-2 test) and central 30-2 full threshold test(C-30-2 test) in detecting glaucomatous visual field defect. Thirty glaucoma patients underwent automated perimetry were enrolled. One eye of each patient was examined with both C-24-2 test and C-30-2 test by a simple crossover design. MD, CPSD, SF, test time and number of question asked were compared using two tests. Whether the differences between two tests would be related to the order of test, the duration between two tests, patient's age, and the degree of visual field loss were performed. C-24-2 test showed 24.4% saving in test time(p0.05). The increase in MD in C-24-2 test was not related to patient`s age, order of tests, the duration between two tests and degree of visual field defect(p>0.05). In conclusion, C-24-2 test reduced test time and increased MD compared to C-30-2 test. It is suggested that the conventional C-30-2 test can be replaced with C-24-2 test without compromising the reliability and ability to detect localized defects.