Ref. [17-20]

Ref. [17-20]

17. Arnarsson A, Jonasson F, Sasaki H et al. Risk factors for nuclear lens opacification: the Reykjavik Eye Study. Developments in ophthalmology 2002; 35:12-20.

18. Midelfart A. Ultraviolet radiation and cataract. Acta Ophthalmologica Scandinavica 2005; 83:642-644.

19. Abraham AG, Cox C, West S. The differential effect of ultraviolet light exposure on cataract rate across regions of the lens. Investigative ophthalmology & visual science 2010; 51:3919-3923.
 
20. West SK, Duncan DD, Munoz B et al. Sunlight exposure and risk of lens opacities in a population-based study: the Salisbury Eye Evaluation project. JAMA : the journal of the American Medical Association 1998; 280:714-718.