Abubakar, T; Gudlavalleti, MVS; Sivasubramaniam, S; Gilbert, CE; Abdull, MM; Imam, AU; Nigeria Natl Blindness, V; (2012) Coverage of Hospital-based Cataract Surgery and Barriers to the Uptake of Surgery among Cataract Blind Persons in Nigeria: The Nigeria National Blindness and Visual Impairment Survey. Ophthalmic epidemiology, 19 (2). pp. 58-66. ISSN 0928-6586 DOI: https://doi.org/10.3109/09286586.2011.643271 Full text not available from this repository.

Sharma, A; Congdon, N; Patel, M; Gilbert, C; (2012) School-based Approaches to the Correction of Refractive Error in Children. Survey of ophthalmology, 57 (3). pp. 272-283. ISSN 0039-6257 DOI: https://doi.org/10.1016/j.survophthal.2011.11.002 Full text not available from this repository.

Rosser, DA; Murdoch, IE; Cousens, SN; (2004) The effect of optical defocus on the test-retest variability of visual acuity measurements. Investigative ophthalmology & visual science, 45 (4). p. 1076. ISSN 0146-0404 DOI: https://doi.org/10.1167/iovs.03-1320 Full text not available from this repository.

Babalola, E; Murdoch, IE; Cousens, S; Abiose, A; Jones, B; (2003) Blindness: how to assess numbers and causes? The British journal of ophthalmology, 87 (3). pp. 282-284. ISSN 0007-1161 DOI: https://doi.org/10.1136/bjo.87.3.282 Full text not available from this repository.

Owen, CG; Fletcher, AE; Donoghue, M; Rudnicka, AR; (2003) How big is the burden of visual loss caused by age related macular degeneration in the United Kingdom? The British journal of ophthalmology, 87 (3). pp. 312-317. ISSN 0007-1161 DOI: https://doi.org/10.1136/bjo.87.3.312 Full text not available from this repository.