RESUMO
Adding HClO4 to [(BnTPEN)MnIII-OO]+ in MeOH generates a short-lived MnIII-OOH species, which converts to a putative MnVîO species. The potent MnVîO species in MeCN oxidizes the pendant phenyl ring of the ligand in an intramolecular fashion. The addition of benzene causes the formation of (BnTPEN)MnIII-phenolate. These findings suggest that high valent Mn species have the potential to catalyze challenging aromatic hydroxylation reactions.
RESUMO
BACKGROUND: The role of part-time occlusion therapy in children with penetrating ocular injuries has not been studied. The aim of the study is to analyze the role of part-time occlusion therapy in children with penetrating ocular trauma following surgical intervention. MATERIALS AND METHODS: This is a retrospective case series with a median follow-up of 17 months (range: 3-105 months). The study was carried out at a tertiary referral center. Consecutive children with penetrating corneal tear injury who underwent surgical intervention were included in the study. These patients were subjected to part-time occlusion, and those with good compliance and follow-up were included in the study. The role of part-time occlusion therapy in children with ocular trauma is studied. RESULTS: There were 26 patients included in the study of which 23 were male and 3 were female, with a median age at presentation of 5 years (range: 1-11 years). The vision following surgical intervention at 6 weeks was 0.85 logMAR units (range: 0.3-2.8). Final median visual acuity was 0.48 logMAR units (range: 0-2). Paired t-test done for improvement in visual outcome before and after amblyopia therapy was statistically significant (P = 0.007). CONCLUSION: Amblyopia therapy shows promising results for patients following penetrating intraocular injury despite corneal scar in the visual axis in our group. A study on larger population is indicated.
