Any NOP features (n=54) | No NOP features (n=16) | p Value | |
---|---|---|---|
Dry eye symptoms | |||
DEQ5 1st encounter | 13.7 (3.7) | 11.4 (3.2) | 0.03 |
DEQ5 2nd encounter | 13.5 (3.8) | 10.8 (3.4) | 0.01 |
Ocular pain | |||
SF-MPQ total | 3.5 (5.6) | 1.1 (1.1) | 0.12 |
SF-MPQ sensory | 2.8 (3.9) | 0.9 (1.1) | 0.07 |
SF-MPQ affective | 0.7 (2.0) | 0.4 (0.7) | 0.56 |
Ocular signs | |||
Osmolarity, mean (SD) | 311 (17) | 306 (12) | 0.26 |
Osmolarity difference between eyes, mean (SD) | 11.1 (10) | 8.9 (7.9) | 0.43 |
TBUT, mean (SD) | 7 (4.6) | 8 (5.3) | 0.40 |
Schirmer, mean (SD) | 10 (7) | 10 (7) | 0.63 |
Corneal staining >1, n (%) | 16 (30%) | 5 (31%) | 0.90 |
Meibum quality >1, n (%) | 24 (45%) | 5 (31%) | 0.32 |
Eyelid vascularity >1, n (%) | 13 (24%) | 3 (19%) | 0.66 |
The number of NOP features also correlated moderately with dry eye symptoms as measured by the DEQ5 (1st encounter: r=0.31, 2nd encounter: r=0.46, p values <0.01 for both).
DEQ5, dry eye questionnaire 5; SF-MPQ, short-form McGill Pain Questionnaire; TBUT, tear break-up time.