How often should I change my contact lenses to maintain optimal ocular health and ensure clear vision? Is there a specific guideline that dictates the frequency of lens replacement based on the type of lenses I use, such as daily disposables, bi-weekly, or monthly lenses? Am I also taking into account the individual variances in my eye chemistry, lifestyle, and environmental factors, which might necessitate a more or less frequent changing schedule? Could neglecting proper lens replacement lead to complications such as infections or discomfort? Furthermore, how can I discern if my lenses are past due for a change? Should I consider consulting an eye care professional regularly to assess not only the appropriate replacement interval but also to evaluate my eye health as it pertains to lens wear? Is it essential to adhere to the guidelines recommended by manufacturers to mitigate risks associated with prolonged use?