A web-based survey of contact lens-related adverse events among Japanese female population: Are decorative contact lenses dangerous?

Abstract

Objectives:To compare the frequency of contact lens (CL)-related complications and to identify the risk factors for transparent and decorative CL users. Methods:A web-based, cross-sectional, observational survey of adverse events related to CL use was performed. The frequencies of complications were compared between two groups. Logistic regression analyses were performed to calculate an odds ratio (OR) for each metric. Age, replacement schedule, total experience, daily wear time, location of purchase, stacking of CLs, CL exchange with friends, compliance to hygiene procedure, replacement of CLs at intervals longer than recommended, and CL wear overnight were considered as confounders. Results:A total of 3,803 Japanese females were surveyed. The frequency of adverse events was 33.35% (95%CI: 31.27%-35.43%) and 35.73% (95%CI: 33.53%-37.98%) for transparent and decorative CLs, respectively. In a multivariate model, statistically significant factors associated with complications included the following: quarterly schedule lenses, replacement of CLs at intervals longer than recommended, compliance to hygiene procedure, CL wear overnight, CL purchase at physical shops and on the internet, and longer daily wearing time.Conclusions:Most of the risk-increasing behaviors are preventable. The role of public health ophthalmology is to increase awareness and to improve CL use behaviors.