TABLE 1.
Demographics, medical comorbidities, and pain characteristics, by population and by pain subgroup.
| All patients; n (%) | Postsurgical pain; n (%) | Post-traumatic pain; n (%) | Migraine-like pain; n (%) | Unilateral pain; n (%) | |
|---|---|---|---|---|---|
| 101 (100%) | 27 (26.7%) | 17 (16.8%) | 41 (40.6%) | 16 (15.8%) | |
| Demographics | |||||
| Age (mean, SD; years) | 55 (17) | 54 (18) | 53 (18) | 52 (17) | 61 (15) |
| Gender, female | 65 (64.4%) | 17 (63.0%) | 14 (82.4%) | 25 (61.0%) | 9 (56.3%) |
| Race, White | 93 (92.1%) | 24 (88.9%) | 16 (88.9%) | 39 (95.1%) | 14 (87.5%) |
| Ethnicity, Hispanic | 31 (30.7%) | 8 (29.6%) | 5 (29.1%) | 11 (26.8%) | 7 (43.8%) |
| Medical Comorbidities | |||||
| Chronic joint pain | 28 (27.7%) | 1 (3.7%) | 7 (41.2%) | 15 (36.6%) | 5 (31.3%) |
| Fibromyalgia | 8 (7.9%) | 2 (7.4%) | 0 (0) | 4 (9.8%) | 2 (12.5%) |
| Migraine | 25 (24.8%) | 6 (22.2%) | 2 (11.8%) | 16 (39.0%) | 1 (6.3%) |
| Peripheral neuropathy | 4 (4.0%) | 3 (11.1%) | 0 (0) | 0 (0) | 1 (6.3%) |
| Trigeminal neuralgia | 7 (6.9%) | 2 (7.4%) | 0 (0) | 2 (4.9%) | 3 (18.8%) |
| Herpetic neuralgia | 5 (5.0%) | 0 (0) | 2 (11.8%) | 2 (4.9%) | 1 (6.3%) |
| Ocular History | |||||
| Pain >1 year | 93 (92.1%) | 24 (88.9%) | 17 (100%) | 38 (92.7%) | 14 (87.5%) |
| Post-LASIK | 9 (8.9%) | 9 (33.3%) | 0 (0) | 0 (0) | 0 (0) |
| Post-PRK | 2 (2.0%) | 2 (7.4%) | 0 (0) | 0 (0) | 0 (0) |
| Post-CE/iol | 5 (4.9%) | 5 (19.0%) | 0 (0) | 0 (0) | 0 (0) |
| Pain Triggers and Descriptors | |||||
| Photophobia | 50 (49.5%) | 11 (40.7%) | 3 (17.6%) | 36 (87.8%) | 0 (0) |
| Cutaneous Allodynia a | 20 (19.8%) | 4 (14.8%) | 7 (41.2%) | 7 (17.1%) | 2 (12.5%) |
| Paresthesia (tingling) | 9 (8.9%) | 2 (7.4%) | 0 (0) | 6 (14.6%) | 1 (6.3%) |
| Foreign Body Sensation | 10 (9.9%) | 3 (11.1%) | 4 (23.5%) | 2 (4.9%) | 1 (6.3%) |
| Dull pain | 4 (4.0%) | 0 (0) | 2 (11.8%) | 1 (2.4%) | 1 (6.3%) |
| Throbbing/Shooting pain | 20 (19.8%) | 7 (25.9%) | 1 (5.8%) | 9 (22%) | 3 (18.8%) |
a
Pain on light touch of the skin around the eye.
SD = standard deviation; LASIK = laser-assisted in situ keratomileusis; PRK = photorefractive keratectomy; CE/iol = cataract extraction and intraocular lens.