When to Replace Your Contact Lenses, and What Happens When They Expire

Understanding Contact Lens Care: A Comprehensive Guide

Introduction to Contact Lenses
Contact lenses, a modern medical advancement introduced in the mid-20th century, have become a convenient solution for vision correction. Despite their common use, they require meticulous care to prevent discomfort and infections. Dr. Robert Kinast emphasizes treating contact lenses with respect, as they are foreign bodies that require proper handling and maintenance.

Lifespan of Contact Lenses
The duration for which contact lenses can be used varies depending on their type. Daily disposables are meant for single use, while hard lenses can last up to two years with proper care. Dr. Meenal Agarwal highlights the importance of adhering to the replacement schedule provided by eye doctors. Soft lenses, the most common type, range from daily to monthly use, whereas rigid gas-permeable lenses last longer but are made of hard plastic.

Identifying Expired Contacts
The expiration date on the box is the primary indicator, with unopened lenses lasting between one to four years. However, visible signs like discoloration, damage, or residue buildup are crucial. Dr. Jovi Boparai warns that even if lenses appear fine, adhering to the expiration date is essential due to potential unseen deposits.

Symptoms of Expired Contacts
Wearing expired lenses can lead to discomfort, redness, pain, blurry vision, and infections. Dr. Agarwal advises immediate removal and consultation with a doctor if such symptoms arise. Additional signs include burning eyes, light sensitivity, and discharge, as noted by Dr. Boparai.

Replacing and Caring for Contacts
Sticking to the recommended replacement schedule is vital, even without noticeable symptoms. Proper care involves handling lenses with clean hands, using the rub-and-rinse method with solution, and storing them in a clean case replaced every three months. Avoiding water and saliva for cleaning prevents bacterial growth and infections.

Preventing Infections and When to Seek Help
Keratitis, an infection linked to improper lens care, can occur from poor hygiene, sleeping in lenses, or contaminated cases. Preventative measures include avoiding lens sharing, not wearing lenses in water, and removing them at the first sign of discomfort. Regular eye exams, at least every two years, are recommended, especially for those with symptoms like pain or vision changes.

Conclusion
Proper care and adherence to guidelines are crucial for maintaining eye health with contact lenses. By following the recommended practices, contact lens wearers can enjoy clear vision and prevent potential complications.