Abstract
Purpose :
We have developed an age-specific color correction method in which surgeons of different age groups can watch surgical video on displays the same as younger surgeons do, considering age-related lens yellowing. In this conference, Yokoyama et al reports the evaluation of visions in surgeons of different age groups. As a result, visibility of important areas improved, but the areas whose color skipped in entire images increased, resulting in unnaturalness in appearance. We explored the method limiting color correction areas to the localized area (cornea region) in order to reduce unnaturalness and compared this with the one color-correcting entire images.
Methods :
A surgical video (approximately 20 seconds) of which a surgeon in his 30s performs phaco-chop in a cataract surgery using 3D digital visualization system (ZEISS ARTEVO 800, Carl Zeiss Meditech, Jena, Germany) was used as the original surgical video. In order to make the images appear as the way surgeons in their 30s can see even for surgeons in their 40s, 50s, 60s, 70s and 80s, we created sugical video with their color corrected in the entire image and the ones with their colors corrected in localized areas of cornea region with these regions automatically tracked. We evaluated and compared measurements of the ratio of color skip (the ratio of pixels whose RGB values were corrected to above 256 or below 0).
Results :
The ratios of color skip in entire color correction and localized color correction were 0.52 and 0.11% for 40s, 2.84 and 0.22% for 50s, 2.98 and 0.22% for 60s, 13.67 and 0.66% for 70s, respectively. The ratios of color skip in localized color correction were lower than those in entire color correction, and the ratios in the images for older subjects showed more significant reduction.
Conclusions :
Localized color correction only to cornea region had no impact on ocular conjunctiva with large white area and reduced color skip of the pixels compared with entire color correction. Furthermore, more substantial reduction was found in color-corrected images for older subjects. Localized color correction has the potential for more natural appearance in overall surgical video compared with entire color correction.
This abstract was presented at the 2023 ARVO Annual Meeting, held in New Orleans, LA, April 23-27, 2023.