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¹M.D. Yozgat State Hospital, Eye Clinic, Yozgat/TURKEY
²M.D. Ulus State Hospital, Eye Clinic, Ankara/TURKEY Hyperbaric oxygen (HBO) therapy is used in many diseases especially for decompression disease. HBO treatment may lead to myopic shift by causing an increase in refractive index of the lens. It has been reported that remission of myopic shift occurs in 6-10 weeks after end of the treatment. A 58 year-old male patient who did not have a history of any ocular trauma, diabetes mellitus or any other systemic diseases has been using far glasses for two and a half months, applied to the clinic with a complaint of blurred vision for one month. The patient received HBO therapy two and a half months ago because of a non-healing wound infection on his foot developed after trauma. He applied to the eye clinic for blurred vision in this period and he was prescribed glasses. His vision was very clear by the glasses at the beginning, and then it was getting blurred one month after the termination of HBO treatment. His vision became clear when he did not use the glasses. We think that these refractive changes are resulted from the HBO treatment. Hence the physicians who perform HBO treatment should inform the patients before treatment about the myopic shift and cataract formation which are rarely seen after HBO. Keeping these facts in mind, it is advised that the ophthalmologists should delay glass examination of those patients one or two months after the termination of HBO treatment. Keywords : Hyperbaric oxygen therapy, transient myopic shift