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No support found for replacing 24-2 with 10-2 visual field testing
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ORLANDO, Fla. – Routine use of 10-2 visual field testing in early glaucoma was found to provide little clinical value to complement serial 24-2 testing, which is already considered standard of care, researchers reported here at the American Academy of Optometry meeting.
Lead author Nicole D. Charry, OD, shared these study results during an academy-sponsored press conference.
“The study was designed to compare rates of glaucomatous visual change between 24-2 and 10-2 to see if there’s an advantage of one test over the other,” Charry said at the press conference.
She and her colleagues enrolled patients with primary open angle glaucoma (POAG) or those who were glaucoma suspects in this longitudinal observational study at Albuquerque VA Medical Center.
The study involved 77 subjects with POAG and 56 glaucoma suspects, with most cases of glaucoma being mild, Charry said. Median age was 67 years in the POAG group and 61.1 years in the glaucoma suspects.
Subjects were tested with the 10-2 and 24-2 Humphrey Field Analyzer at 4- to 6-month intervals.
“At least five good quality tests were required,” Charry said. “We looked at age, stage of disease, severity of visual field loss at baseline and prevalence of 24-2 defect at baseline.”
According to the abstract, the mean deviation change rates for both tests were related to each other, diagnosis, baseline age, presence of baseline visual field defects and mean deviation on both tests. However, within subjects, no differences were found for either eye.
“Because 24-2 and 10-2 visual field loss rates were similar in this study, serial testing using 10-2 pattern appears to offer little additional clinical value vs. the standard 24-2 pattern for early glaucoma patients,” Charry concluded. “Thus, while 10-2 may have value for episodic testing in glaucoma, this study does not support 10-2 replacement of the 24-2 or frequent, regular testing using the 10-2 for monitoring of early glaucoma.” – by Nancy Hemphill, ELS, FAAO
Reference:
Charry ND, et al. Rates of visual field progression in glaucoma: 10-2 versus 24-2 test patterns. Presented at: American Academy of Optometry meeting; Orlando, Fla.; October 22-27, 2019.
Disclosure: Charry reported no relevant financial disclosures.