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I see that quite a few people have been using castor oil for their dry eyes, but has anyone seen this study (link below) that was done about the effects of various oils on the eyes? It found that castor oil was CYTOTOXIC to conjunctival cells..... I personally have been using organic cold-pressed olive oil for my dry eyes for several years with good results.... I just use an eyedropper to put 12 drops of the olive oil in each eye at bedtime and I can wear my contacts ALL DAY with no problems.... Again, to everyone using castor oil in their eyes, please click on the link below and read...!!