Comment on: Serum vitamin D levels in children with vernal keratoconjunctivitis – A study from a tertiary care pediatric hospital of North India.

The letter published in the Indian Journal of Ophthalmology discusses a study on the relationship between serum vitamin D levels and the severity of Vernal keratoconjunctivitis (VKC) in pediatric patients in North India. The authors raise concerns about potential confounding factors such as sun exposure, refractive errors, gender bias, and the use of topical medications in the study. They emphasize the importance of addressing these concerns to ensure the accuracy of the study's findings. The authors also declare that appropriate patient consent was obtained and disclose no conflicts of interest. [Extracted from the article]