2019 Volume 34 Issue 1 Pages 42-48
Objective: We introduced optical coherence tomography (OCT) as an option in a 2-day health check-up. Afterwards, we compared the results of OCT with those of other examinations.
Methods: Our subjects were 263 individuals (173 men, 90 women) who wished to have OCT from among 1,613 examinees (1,030 men, 583 women) who underwent a 2-day health check-up from October 2017 to March 2018. Those under treatment for glaucoma were excluded. The examinees underwent fundus photography, intraocular pressure measurement and frequency doubling technology (FDT) testing on the same day as OCT and the findings were assessed by 2 ophthalmologists. In the 263 subjects, we compared examinations for suspected glaucoma rates and compared fundus photography and OCT for rates of suspected conditions other than glaucoma. In addition, we divided them into 3 groups based on the exams conducted for all subjects in the same period and compared suspected glaucoma rates with the results of secondary testing.
Results: The suspected glaucoma detection rates for the 263 subjects who underwent OCT were 7.2% for fundus photography, 2.3% for intraocular pressure measurement, 2.3% for FDT testing and 12.2% for OCT. The suspected glaucoma rates for the 3 groups were 10.3% for fundus photography with intraocular pressure, 9.2% for fundus photography with intraocular pressure and FDT and 15.2% for fundus photography with intraocular pressure, FDT and OCT. In ascending order, the positive predictive values were 32.5%, 43.5% and 50.0%, respectively. Conditions other than glaucoma detected by OCT were macular epithelia, choroidal tumor, choroidal atrophy and macular degeneration.
Conclusion: With OCT, the detection rate for suspected glaucoma was higher than for fundus photography, intraocular pressure and FDT. Also, when performed with other exams, OCT raised the accuracy of assessments. However, there are conditions that are difficult to detect with OCT alone so improved accuracy could be expected by combining it with other ophthalmology exams in such cases.
