Objective: To observe the impact of application of bio-amniotic membrane immersed in 5-fluorouracil solution in trabeculectomy on the retina. Method Healthy white New Zealand rabbits were randomly assigned into three groups with 20 in each group. They accepted trabeculectomy and intraoperational implementation of 4×5 mm bio-amniotic membranes immersed in either physiological saline/water for 10 min, or 25 mg/mL 5-fluorouracil solution for 5 and 10 min, respectively. At 7, 14, 21 and 28 d of postoperation, 5 rabbits from each group were examined with electroretinogram (ERG) and then sacrificed by air embolism. Their retinas were collected and examined by transmission electron microscopy (TEM). In addition, 5-fluorouracil amount in bio-amniotic membranes was measured using high-performance liquid chromatography. Results Each bio-amniotic membrane could absorb 59.004 and 75.828 mg 5-fluorouracil after immersed in 5-fluorouracil solution for 5 and 10 min, respectively. Application of these bio-amniotic membranes in trabeculectomy had no effect on ERG and TEM structures of retina. Conclusion Application of bio-amniotic membrane containing a certain amount of 5-fluorouracil in trabeculectomy has no significant damage to retina.
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