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Riboflavin concentration in corneal stroma after intracameral injection

International Journal of Ophthalmology(English edition) 2015年第3期8卷 470-475页

作者： Na Li Xiu-Jun Peng Zheng-Jun Fan Xu Pang Yu Xia Teng-Fei Wu Chinese PLA Medical School & Chinese PLA General Hospital Department of Ophthalmology Navy General Hospital of Chinese PLA

AIM: To evaluate the enrichment of riboflavin in the corneal stroma after intracameral injection to research the barrier ability of the corneal endothelium to riboflavin in vivo.METHODS: The right eyes of 30 New Zealand white rabbits were divided into three groups. Different concentrations riboflavin-balanced salt solutions(BSS)were injected into the anterior chamber(10 with 0.5%, 10 with 1%, and 10 with 2%). Eight corneal buttons of 8.5mm in diameter from each group were dissected at 30 min after injection and the riboflavin concentrations in the corneal stroma were determined using high-performance liquid chromatography(HPLC) after removing the epithelium and endothelium. The other two rabbits in every group were observed for 24 h and sacrificed. As a comparison, the riboflavin concentrations from 16 corneal stromal samples were determined using HPLC after instillation of 0.1% riboflavin-BSS solution for30 min on the corneal surface(8 without epithelium and 8with intact epithelium).RESULTS: The mean riboflavin concentrations were11.19, 18.97, 25.08, 20.18, and 1.13 μg/g for 0.5%, 1%, 2%,de-epithelialzed samples, and the transepithelial groups,respectively. The color change of the corneal stroma and the HPLC results showed that enrichment with riboflavin similar to classical de-epithelialized corneal collagen crosslinking(CXL) could be achieved by intracameral 1%riboflavin-BSS solution after 30min; the effect appeared to be continuous for at least 30 min.CONCLUSION: Riboflavin can effectively penetrate the corneal stroma through the endothelium after an intracameral injection in vivo, so it could be an enhancing method that could improve the corneal riboflavin concentration in transepithelial CXL.

关键词： riboflavin cornea intracameral injection high-performance liquid chromatography endothelium

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Safety of prophylactic intracameral moxifloxacin ophthalmic solution after cataract surgery in patients with penetrating keratoplasty

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International Journal of Ophthalmology(English edition) 2014年第5期7卷 795-799页

作者： Osman Sevki Arslan Ceyhun Arici Mustafa Unal Erdogan Cicik Mehmet Serhat Mangan Eray Atalay Department of Ophthalmology Cerrahpasa Medical FacultyIstanbul University Department of Ophthalmology Medical FacultyAkdeniz University

AIM:To determine the safety of prophylactic intracameral moxifloxacin after cataract surgery in patients with penetrating keratoplasty(PKP).METHODS:In this retrospective study of consecutive patients who had phacoemulsification cataract surgery after PKP, were treated with intracameral moxifloxacin0.5% ophthalmic solution(0.5 mg/0.1 mL). The main outcome measures were anterior chamber reaction, best corrected visual acuity(BCVA), corneal endothelial cell count(ECC), and central corneal thickness(CCT).RESULTS:Fifty-five patients were recruited(26 males,29 females). The mean age was 54.36±4.97y(range 45-64y).All eyes had improved postoperative BCVA. The mean BCVA was 0.25 preoperatively and 0.57 postoperatively,which was statistically significant(P intracameral injection of moxifloxacin(0.5 mg/0.1 mL) in terms of anterior chamber reaction, CCT, ECC, and visual rehabilitation at the conclusion of cataract surgery in patients with PKP.

关键词： cataract surgery intracameral injection moxifloxacin penetrating keratoplasty phacoemulsification

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