Table 1.
Baseline patient demographic and clinical characteristics
| Characteristic | N = 102 Patients |
|---|---|
| Gender: Female N( %) | 53 (52) |
| Race/ethnicity, N(%) | |
| White | 70 (69) |
| African American | 6 (6) |
| Hispanic or Latino | 11 (11) |
| Other | 4 (4) |
| Unknown/not reported | 11 (11) |
| Age at onset of nasolacrimal duct obstruction (NLDO), in months* N (%) | |
| 0 to <1 | 81 (79) |
| 1 to <6 | 21 (21) |
| Age at surgery, in months N (%) | |
| 12 - <18 | 34 (33) |
| 18 -<24 | 31 (30) |
| 24 - <36 | 25 (25) |
| 36 - <48 | 12 (12) |
| Mean (range) | 23 (12–47) |
| Previous treatment with topical antibiotics N (%) | |
| Yes (at least one eye) | 53 (52) |
| No (neither eye) | 35 (34) |
| Not known | 14 (14) |
| Previous treatment with nasolacrimal duct (NLD) massage N (%) | |
| Yes (at least one eye) | 47 (46) |
| No (neither eye) | 37 (36) |
| Not known | 18 (18) |
| Laterality of NLDO treated with balloon (by patient) N (%) | |
| Unilateral | 53 (52) |
| Bilateral | 49 (48) |
| Clinical signs | N=151 eyes |
| Increased tear lake present N (%) | 141 (93) |
| Epiphora present N (%) | 97 (64) |
| Mucous discharge present N (%) | 75 (50) |
| Number of clinical signs of NLDO N (%) | |
| 1 | 45 (30) |
| 2 | 50 (33) |
| 3 | 56 (37) |
| Dye disappearance test (DDT) results at enrollment N (%) | |
| Normal** | 4 (3) |
| Indeterminate | 23 (15) |
| Abnormal | 124 (82) |
| Type of obstruction N (%) | |
| Simple | 92 (61) |
| Complex | 59 (39) |
| Inferior turbinate infracture performed N (%) | |
| Yes | 24 (16) |
| No | 127 (84) |
*
Bilateral patients were classified according to age at onset in first eye.
**
Clinical signs in patients with normal dye disappearance test results included increased tear lake as the only sign in 2 patients, epiphora and increased tear lake in 1 patient, and all 3 signs in 1 patient.