Table 1 Demographic data of study patients (n = 560)
Characteristics
Median age (years)35 (range 1–90)
Sex
    Men291 (51.9%)
    Women269 (48.1%)
Referral
    Self431 (76.9%)
    Community optometrist56 (10%)
    GP45 (8.1%)
    Other hospital28 (5%)