Qualitative grading of the endothelial images
| Image quality | Score | Criteria |
|---|---|---|
| For the analyses in tri-image mode, overall quality was graded “good” if the three images obtained scores of 2/2/2 or 2/2/1, “average” if the scores were 2/1/1, 2/1/0, or 1/1/1, and “poor” if the scores were 1/1/0, 1/0/0, or 0/0/0. | ||
| Good | 2 | Excellent view of cell borders; low background noise; cells visible on over 2/3 of image area |
| Average | 1 | Good view of cell borders; moderate background noise; cells visible on 1/3 to 2/3 of image area |
| Poor | 0 | Poor view of cell borders; high background noise; cells visible on less than 1/3 of image area |