Caffeine and Cataract After Pars Plana Vitrectomy

Who May Qualify: - Age 18 or older - Written willing to sign a consent form - No previous cataract surgery in the study eye - Scheduled small gauge vitrectomy with intraoperative gas tamponade (SF6 or C3F8) due to retinal detachment or macular hole repair - No regular caffeine consumption (drinking not more than one cup of a caffeine- containing beverage \[e.g. coffee, energy drinks\] at a maximum of two days per week during the past year) Who Should NOT Join This Trial: - Intake of systemic or topical corticosteroids within 3 months before study screening - Increased risk for postoperative cataract development, for example due to ocular trauma in the history - Severe cataract (LOCS III grading of any cataract form \>2) in the study eye at pre- study screening - Scheduled phacovitrectomy in the study eye - Participation in any clinical trial three month before study screening - Ocular surgeries six month before study screening Always talk to your doctor about whether this trial is right for you.