A child's risk of developing the eye condition hyperopia may be increased if their parents smoke and they are frequently in a smoke environment, a new study has suggested.
Research carried out by experts at Ain Shams University in Cairo, which was published in the latest issue of Ophthalmic and Physiological Optics and seen by Optician Online, shows that passive smoking was related to refractive error and should therefore be considered as a significant factor for a hypermetropic shift.
In the study, specialists cross-referenced the number of parental cigarettes smoked with the urinary levels of cotinine and creatinine in a sample of 300 children and found that those with hyperopia had a far higher concentration of urinary cotinine than those with no eye problems.
The experts now intend to establish a causal relationship by conducting follow-up studies in a smoke-free environment.
Commenting on the research, Optician clinical editor Bill Harvey said: "Further study needs to decide on any direct association when one bears in mind other factors such as the socio-economic status of smoking parents and the environmental conditions in which children are brought up."