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مقاله
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Abstract
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Title:
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Assessment of opening, closing, and reopening pressure changes in Ahmed Glaucoma Valve after 1 month tube ligation
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Author(s):
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Naveed Nilforushan, MD, Maryam Yadgari, MD
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Presentation Type:
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Oral
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Subject:
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Glaucoma
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Others:
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Presenting Author:
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Name:
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Maryam Yadgari
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Affiliation :(optional)
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Eye Research Center, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
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E mail:
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maryam.yadgari@yahoo.ie
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Phone:
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Mobile:
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09123632301
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Purpose:
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To evaluate opening, closing, and reopening pressure changes in silicone Ahmed Glaucoma Valve after 1 month tube ligation.
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Methods:
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Three Ahmed Glaucoma Valves (2 FP7 and 1 FP8) were used in this study. After priming the AGV, we measured the opening pressure, closing pressure, and re-opening pressure using the active infusion pump of a phaco machine and then did complete tube ligation with nylon 4-0. These 3 shunts were then placed in separate normal saline container for 1 month and then the opening and closing and re-opening pressure were reevaluated.
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Results:
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Opening, closing, and reopening pressures were 13, 4 and 6 mm Hg, in shunt A (FP7), 27, 13and 24mm Hg, in shunt B (FP8), and 26, 8 and 20 mm Hg, in shunt C (FP7), respectively before ligation. After ligation, theses pressures were 12, 5 and 7 mm Hg, in shunt A, 12, 6 and 9 mm Hg, in shunt B, and 26, 3 and 6 mm Hg, in shunt C, respectively.
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Conclusion:
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There was no significant increase in opening, closing, or re-opening pressures after 1 month tube ligation (sign of restriction) in this study.
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Attachment:
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