Capability of Ophthalmology Residents to Detect Glaucoma Using High-Dynamic-Range Concept versus Color Optic Disc Photography

Background. assessment of color disc photograph (c-dp) is affected by image quality,which decreases the ability to detect glaucoma. high-dynamic-range (hdr) imaging provides a greater range of luminosity. therefore,the objective of this study was to evaluate the capability of ophthalmology residents to detect glaucoma using hdr-concept disc photography (hdr-dp) compared to c-dp. design. cross-sectional study. methods. twenty subjects were classified by 3 glaucoma specialists as either glaucoma,glaucoma suspect,or control. all c-dps were converted to hdr-dps and randomly presented and assessed by 10 first-year ophthalmology residents. sensitivity and specificity of glaucoma detection were compared. results. the mean ± sd of averaged retinal nerve fiber layer (rnfl) thickness was 74.0 ± 6.1 μm,100.2 ± 9.6 μm,and 105.8 ± 17.2 μm for glaucoma,glaucoma suspect,and controls,respectively. the diagnostic sensitivity of hdr-dp was higher than that of c-dp (87% versus 68%,mean difference: 19.0,95% ci: 4.91 to 33.1; p=0.014). regarding diagnostic specificity,hdr-dp and c-dp yielded 46% and 75% (mean difference: 29.0,95% ci: 13.4 to 44.6; p=0.002). conclusions. hdr-dp statistically increased diagnostic sensitivity but not specificity. hdr-dp may be a screening tool for nonexpert ophthalmologists. © 2017 mantapond ittarat et al.