Citation: W. Birchall et Af. Spencer, Misalignment of flexible iris hook retractors for small pupil cataract surgery: Effects on pupil circumference, J CAT REF S, 27(1), 2001, pp. 20-24
Citation: W. Birchall et V. Kumar, A comparative study of proxymetacaine-fluorescein and lignocaine-fluorescein use during applanation tonometry, BR J OPHTH, 85(4), 2001, pp. 477-479
Citation: W. Birchall et al., Inadvertent staining of the posterior lens capsule with trypan blue dye during phacoemulsification, ARCH OPHTH, 119(7), 2001, pp. 1082-1083
Citation: W. Birchall, Minimising the impact of visual impairment - Training in use of low visionaids is important, BR MED J, 319(7211), 1999, pp. 707-707