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Preoperative dry eye evaluation.
| OSDI questionnaire |
| Slit lamp examination: eyelid disease, tear volume, tears debris, conjunctiva and corneal injection, and fluorescein staining |
| TBUT |
| OPI |
| Schirmer testing |
OSDI: ocular surface disease index; TBUT: tear break up time; OPI: ocular protection index.
