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A. S. Neubauer, M. Kernt, C. Haritoglou, M. Ulbig, A. Kampik, I. Kozak, S. F. Oster, K. Hartmann, J. Kim, W. R. Freeman; Image Quality of a Novel Navigated Retina Laser (NAVILAS®). Invest. Ophthalmol. Vis. Sci. 2010;51(13):1639.
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© ARVO (1962-2015); The Authors (2016-present)
To investigate image quality of retina images obtained by a novel retina laser device built for navigated treatments (NAVILAS®).
Fundus of 20 eyes of 20 patients was imaged digitally by NAVILAS® and by a standard digital fundus camera. Images were graded side-by-side independently by three graders masked to the image source. On visual analog scales (scale 0 worst to 10 best) a total of 7 distinct image characteristics were investigated: brightness, contrast, focus (sharpness), color, resolution and details, validity of clinical assessment and overall quality. The core image characteristics that influence visibility and detectability of the pathology were evaluated in order to determine if the NAVILAS images allow for precise and fast localization of pathologies and therefore fast layout of treatment plan.
For all of the 7 scales the NAVILAS® yielded good image results. Average results were graded consistently comparable or better (all p<0.001) than standard digital fundus photography for all patients: brightness (7.9 vs 7.0), contrast (7.9 vs 6.6), focus (7.7 vs 6.6), color (7.8 vs 6.9) and resolution and details (7.7 vs 6.2). Regarding the highly relevant summary image characteristics the NAVILAS® showed good results with an average evaluation of 7.6 vs 6.1 for validity of clinical assessment and 7.7 vs 6.4 for overall quality (p<0.001). All 3 graders yielded very consistent results to each other.
NAVILAS® provides fundus images in at least similarly high quality as expert photography. Targeting of various pathologies such as microaneurysms has the technical potential to be performed at high accuracy and speed.
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