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Scientia Pharmaceutica is published by MDPI from Volume 84 Issue 3 (2016). Articles in this Issue were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence. Articles are hosted by MDPI on as a courtesy and upon agreement with Austrian Pharmaceutical Society (Österreichische Pharmazeutische Gesellschaft, ÖPhG).
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Sci. Pharm. 2008, 76(3), 505-514; (registering DOI)

Effect of Formulation Parameters on Corneal Permeability of Ofloxacin

Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar – 125 001, Haryana
Delhi Institute of Pharmaceutical Sciences and Research, (University of Delhi), Pushp Vihar, Sector-III, New Delhi – 110 017, India
Author to whom correspondence should be addressed.
Received: 20 April 2008 / Accepted: 3 July 2008 / Published: 9 August 2008
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Influence of pH, buffer, preservative, tonicity and viscosity modifiers on in vitrotranscorneal permeation of ofloxacin was studied using excised goat cornea. Permeation studies were carried out by putting 1 ml of test formulation on the cornea (0.78cm²) mounted between the donor and receptor compartments of an all glass modified Franz diffusion cell and measuring ofloxacin concentration in the receptor (containing bicarbonate ringer under stirring at 35°C) by spectrophotometry at 288 nm, at various time intervals up to 120 min. Buffering the formulation with phosphate buffer or use of combination of methyl and propyl paraben or benzalkonium chloride or combination of benzalkonium chloride and disodium edetate as preservative provided significant increase in the apparent corneal permeability coefficient of ofloxacin. While the use of phenyl mercuric acetate as preservative or tonicity adjustment with mannitol showed a significant decrease in apparent corneal permeability of ofloxacin. Raising the pH of test formulation from 6.4 to 7.2 or addition of hydroxyl-propyl-β-cyclodextrin or use of viscosity modifier had no significant effect on apparent corneal permeability of drug.
Keywords: Ofloxacin; Corneal permeation; Formulation factors; Papp Ofloxacin; Corneal permeation; Formulation factors; Papp
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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AHUJA, M.; SINGH, G.; MAJUMDAR, D.K. Effect of Formulation Parameters on Corneal Permeability of Ofloxacin. Sci. Pharm. 2008, 76, 505-514.

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