Short-sightedness, or myopia, affects around a third of children and teenagers and research suggests that it is becoming more common. A laser treatment, called photorefractive keratectomy (PRK), is widely used to treat myopia in adults but questions remain over its use in teenagers. Around 64% of the teenagers’ eyes achieved 20/20 vision (normal visual acuity), compared with 59% of adult eyes. “The research suggests that for well-screened teenagers with stable myopia, PRK could be a safe and effective option, especially when contact lenses or glasses are not ideal. In children, short sightedness is treated with glasses or contact lenses, while adults can choose to have laser treatment to correct their vision.