Bacterial contamination of regular contact lens cases during daily wear of marketed and investigational contact lenses.

This study is looking at whether contact lens cases become contaminated with bacteria during normal daily wear of either new (investigational) or currently available contact lenses. Bacterial contamination of lens cases is a known risk factor for eye infections. By tracking how quickly bacteria build up in cases under normal use, researchers hope to improve guidance on contact lens safety and hygiene. You may be eligible if: - You are at least 18 years old - You can read and understand English and provide informed consent - You are willing to attend study visits and follow the wearing schedule - Your eyes are generally healthy for wearing contact lenses - Your vision can be corrected to at least 6/12 (20/40) with contact lenses You may NOT be eligible if: - You have an existing eye irritation, injury, or condition that prevents safe contact lens wear - You have a systemic disease that affects eye health - You have an active eye infection - You are taking eye medications (Category S3 and above) within 12 weeks before or during the trial - You have had corneal refractive surgery (e.g., LASIK) - You are currently enrolled in another clinical trial - You are pregnant Talk to your doctor about whether this trial might be right for you.