The following journal articles offer evidence of incidence of retinal damage from viewing solar eclipses:
J, Dowler (1999) 'Staying Safe During the Eclipse -turn your back on the sun', British Medical Journal, 319; pp 329-30
M. Michaelides., R. Rajendram, J. Marshall, and S. Keightley, (2001), ‘Eclipse Retinopathy Clinical Case Study’, Royal College of Ophthalmologists: Eye, 15, 148-151.
Gulkilik G, Taskapili M, Kocabora S, Demirci G, Muftuoglu GI (2009), ‘Association between visual acuity loss and optical coherence tomography findings in patients with late solar retinopathy’. Retina. 29(2):257-61.
Wong, S, C, K., Eke, T., and N, G, Ziakas, (2001) Eclipse burns: a prospective study of solar retinopathy following the 1999 solar eclipse, The Lancet, 357 (9251), pp 199 – 200.
Wong, S, C, K., Eke, T., and N, G, Ziakas (2001) 'Correspondence- Eclipse burns: a prospective study of solar retinopathy following the 1999 solar eclipse' The Lancet, 358, pp 674