TY - JOUR
T1 - Detection of incident field loss using the glaucoma hemifield test
AU - Katz, J.
AU - Quigley, H. A.
AU - Sommer, A.
N1 - Funding Information:
Originally received: May 26, 1995. Revision accepted: December 12, 1995. I Department ofInternationai Health, Johns Hopkins School of Hygiene and Public Health, Baltimore. 2 Dana Center for Preventive Ophthalmology, Johns Hopkins Schools of Medicine and Hygiene and Public Health, Baltimore. 3 Dean's Office, Johns Hopkins School of Hygiene and Public Health, Baltimore. Presented at the ARVO Annual Meeting, Ft. Lauderdale, May 1995. Supported by grants EY09130, EY03605 and RR04060 of the National Institutes of Health, Bethesda, Maryland. The authors have no commercial or proprietary interest in the Humphrey Analyzer or in the company that manufacturers this product. Dr. Quigley has been compensated as a consultant for this product. The other authors have not received payment as a consultant, reviewer, or evaluator of this product.
PY - 1996
Y1 - 1996
N2 - Purpose: To examine different definitions of incident visual field loss among patients with elevated intraocular pressure and varying numbers of abnormal glaucoma hemifield test results over an average of 6 years of follow-up. Methods: A cohort of patients with annual C-30-2 Humphrey visual fields were followed for a minimum of 5 years. Three different definitions of field loss were compared: 1, 2, or 3 consecutive annual abnormal glaucoma hemifield test results. Results: Of 253 subjects, 506 eyes were followed for 5 to 9 years. If incident field loss was defined as one or more normal fields followed by one abnormal glaucoma hemifield test result, the incidence of field loss was 63.6 per 1000 person-years of follow-up. For two or three consecutive abnormal glaucoma hemifield test results, the rates were 27.6 and 19.2 per 1000 person-years of follow-up, respectively. Among patients with field loss in one eye at the start of the study, the incidence of field loss in the fellow eye using 1, 2, or 3 consecutive abnormal fields as the definition of incident field loss was 60.9, 55.5, and 26.5 per 1000 person- years of follow-up, respectively. Three years after incident field loss, 31.9% (1 abnormal test result), 76.5% (2 abnormal test results), and 88.6% (3 abnormal test results) of eyes with incident field loss had an abnormal hemifield test result. For eyes with one, two, and three consecutive abnormal glaucoma hemifield test results at the start of the study, 59.2%, 83.6%, and 89.1%, respectively, had an abnormal field 3 years later. Conclusions: One abnormal glaucoma hemifield test result is not a consistent criterion for defining incident field loss. The use of two or three consecutive abnormal fields to define incident field loss makes it more likely that subsequent test results will be abnormal.
AB - Purpose: To examine different definitions of incident visual field loss among patients with elevated intraocular pressure and varying numbers of abnormal glaucoma hemifield test results over an average of 6 years of follow-up. Methods: A cohort of patients with annual C-30-2 Humphrey visual fields were followed for a minimum of 5 years. Three different definitions of field loss were compared: 1, 2, or 3 consecutive annual abnormal glaucoma hemifield test results. Results: Of 253 subjects, 506 eyes were followed for 5 to 9 years. If incident field loss was defined as one or more normal fields followed by one abnormal glaucoma hemifield test result, the incidence of field loss was 63.6 per 1000 person-years of follow-up. For two or three consecutive abnormal glaucoma hemifield test results, the rates were 27.6 and 19.2 per 1000 person-years of follow-up, respectively. Among patients with field loss in one eye at the start of the study, the incidence of field loss in the fellow eye using 1, 2, or 3 consecutive abnormal fields as the definition of incident field loss was 60.9, 55.5, and 26.5 per 1000 person- years of follow-up, respectively. Three years after incident field loss, 31.9% (1 abnormal test result), 76.5% (2 abnormal test results), and 88.6% (3 abnormal test results) of eyes with incident field loss had an abnormal hemifield test result. For eyes with one, two, and three consecutive abnormal glaucoma hemifield test results at the start of the study, 59.2%, 83.6%, and 89.1%, respectively, had an abnormal field 3 years later. Conclusions: One abnormal glaucoma hemifield test result is not a consistent criterion for defining incident field loss. The use of two or three consecutive abnormal fields to define incident field loss makes it more likely that subsequent test results will be abnormal.
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U2 - 10.1016/S0161-6420(96)30638-6
DO - 10.1016/S0161-6420(96)30638-6
M3 - Article
C2 - 8618767
AN - SCOPUS:0029989320
SN - 0161-6420
VL - 103
SP - 657
EP - 663
JO - Ophthalmology
JF - Ophthalmology
IS - 4
ER -