Relationships between Symptoms and Signs of Dry Eye Using Symptom Assessment in Dry Eye Questionnaires

Purpose: To investigate the pattern of Symptom Assessment in Dry Eye (SANDE) questionnaire symptom scores in dry eye disease (DED) patients and to assess the relationships with several dry eye signs.Methods: The medical records of 173 patients with DED were analyzed retrospectively. Each patient’s SANDE score and history of autoimmune disease and ocular surgery were investigated, and Schirmer’s test, tear film breakup time (TBUT), ocular surface staining score (OSS), tear osmolarity, and tear MMP-9 test were assessed. The distribution of SANDE scores and relationships between the SANDE score and various dry eye signs were analyzed. The relationships between the SANDE scores of TBUT (< 5 / ≥ 5) and OSS (< 3 / ≥ 3) subgroups were compared.Results: The average SANDE score was 52.6 ± 28.1. The SANDE scores were significantly higher in OSS ≥ 3 than in OSS < 3 (79.1 ± 21.6 vs. 51.1 ± 27.6, p = 0.030), and TBUT ≥ 5 had marginally significantly lower SANDE scores than TBUT < 5 (47.2 ± 25.6 vs. 55.6 ± 29.0, p = 0.050). TBUT was significantly negatively (R = -0.151, p = 0.024) correlated with the SANDE score, while OSS was marginally significantly positively (R = 0.111, p = 0.073) correlated. As OSS increased, the SANDE scores tended to increase (p for trend = 0.008). Other dry eye signs were not associated with the SANDE score.Conclusions: The DED symptom score from the SANDE questionnaire was related to TBUT and OSS, but there was still a discrepancy between the symptoms and signs of DED.

Effects of the re-esterified triglyceride (rTG) form of omega-3 supplements on dry eye following cataract surgery

Background/Aims

To evaluate the clinical outcomes of the systemic re-esterified triglyceride (rTG) form of omega-3 fatty acids in patients with dry eye symptoms after cataract surgery.

Methods

This prospective comparative cohort study comprised 66 patients complaining of new-onset non-specific typical dry eye 1 month after uncomplicated cataract surgery. Subjects were randomly allocated into control and omega-3 groups based on administration of the systemic rTG form of omega-3 fatty acids for 2 months, in addition to use of artificial teardrop. Ocular surface parameters (Schirmer’s test, tear break-up time, corneal staining score and matrix metalloproteinase-9 (MMP-9)) and subjective questionnaire results (Ocular Surface Disease Index (OSDI)) and Dry Eye Questionnaire [DEQ]) for dry eye were evaluated before and after omega-3 supplementation.

Results

Two months after omega-3 supplementation, the Oxford score was lower in the omega-3 group than in the control group. There was an improvement of subjective symptom scores of OSDI and DEQ in the omega-3 group (both p<0.05). The ratio of increasing MMP-9 level in the omega-3 group was lower than that in the control group (p=0.027).

Conclusion

The rTG form of omega-3 supplementation might be related to reduction of ocular surface inflammation rather than secretion of tears, and it might be effective for non-specific typical dry eye after uncomplicated cataract surgery.

Trial registration Number

NCT04411615.