4. Table 4. Summary of ocular surface staining procedures and grading scales.
| Study | Corneal fluorescein | Conjunctival fluorescein | Corneal lissamine green | Conjunctival lissamine green | Corneal rose bengal | Conjunctival rose bengal |
| Aragona 2005 | Scale not specified (scored from 0 to 15) | NA | NA | NA | NA | NA |
| Asbell 2018 | Scale not specified (scored from 0 to 15) | NA | NA | Scale not specified (scored from 0 to 6) | NA | NA |
| Barabino 2003 | NA | NA | NA | van Bijsterveld scale | NA | NA |
| Bhargava 2013 | NA | NA | NA | NA | van Bijsterveld scale (graded from 0 to 9) | |
| Brignole‐Baudouin 2011 | Oxford scale | NA | NA | van Bijsterveld scale | NA | NA |
| Creuzot 2006 | Oxford scale | NA | NA | van Bijsterveld scale | NA | NA |
| Creuzot‐Garcher 2011 | Oxford scale | NA | van Bijsterveld scale | NA | NA | |
| Deinema 2017 | Oxford scale | NA | NA | Oxford scale | NA | NA |
| Epitropoulos 2016 | Oxford scale | NA | NA | NA | NA | NA |
| Goyal 2017 | National Eye Institute/Industry workshop scale | NA | NA | National Eye Institute/Industry workshop scale | NA | NA |
| Kawakita 2013 | Scale not specified (scored from 0 to 9) | NA | NA | Scale not specified (scored from 0 to 9) | ||
| Kawashima 2016 | Japanese diagnostic criteria | NA | NA | NA | NA | |
| Kokke 2008 | CCLRU scale | CCLRU scale | NA | NA | van Bijsterveld scale | van Bijsterveld scale |
| NCT01107964 | NA | NA | Scale not specified (scored from 0 to 9) | NA | NA | |
| Macsai 2008 | National Eye Institute/Industry workshop scale | NA | NA | NA | NA | Six regions of conjunctiva, each graded from 0 to 3 |
| Manthorpe 1984 | NA | NA | NA | NA | van Bijsterveld scale | |
| Oleñik 2013 | Oxford scale | Oxford scale | NA | NA | NA | NA |
| Oxholm 1986 | NA | NA | NA | NA | van Bijsterveld scale | |
| Sheppard 2013 | Scale not specified | NA | NA | Scale not specified | NA | NA |
| Theander 2002 | NA | NA | van Bijsterveld scale | NA | NA | |
| Wojtowicz 2011 | NA | NA | National Eye Institute/Industry workshop scale | NA | NA | NA |
CCLRU, Cornea and Contact Lens Research Unit; NA, not applicable (not investigated in this study).
References to grading scales: CCLRU scale (Terry 1993); Japanese diagnostic criteria (Uchino 2012); National Eye Institute/Industry workshop scale (Lemp 1995); Oxford scale (Bron 2003); van Bijsterveld (van Bijsterveld 1969).