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All dogs received topical (0.2\u00a0mL) and subconjunctival (0.1\u00a0mL) 0.1% PFMS in one eye following phacoemulsification. The other eye received an equal volume and mode of administration of balanced salt solution (BSS). Ophthalmic examination, blinking rates, tearing, conjunctival hyperemia, aqueous flare, and central corneal esthesiometry (CCE) were evaluated in all eyes 1\u00a0day prior to surgery and at 4, 24, and 48\u00a0hours after surgery. Complete physical examination, ocular ultrasound, electroretinogram, hemogram, and serum biochemistry panel were performed in all dogs prior to phacoemulsification. All dogs received the standard of care treatment before and after surgery, including uniform anesthetic protocol.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Baseline ophthalmic exams were unremarkable, except for the presence of cataracts, in all dogs. The mean CCE (\u00b1SD) at 4\u00a0hours post\u2010operatively was 1.76\u00a0\u00b1\u00a01.27\u00a0g\/mm<jats:sup>2<\/jats:sup> and 1.85\u00a0\u00b1\u00a01.5\u00a0g\/mm<jats:sup>2<\/jats:sup> for the negative control and PFMS groups, respectively. There were no statistical differences in blepharospasm, conjunctival hyperemia, tearing, aqueous flare, blinking rates, CCE, or intraocular pressure (IOP) between the treatment groups for any of the time points for the non\u2010diabetic and diabetic dogs, or for all dogs combined (<jats:italic>P<\/jats:italic>\u00a0&gt;\u00a0.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Topical and subconjunctival 0.1% PFMS did not affect the evaluated parameters after phacoemulsification in the study dogs at the timepoints assessed.<\/jats:p><\/jats:sec>","DOI":"10.1111\/vop.12770","type":"journal-article","created":{"date-parts":[[2020,5,5]],"date-time":"2020-05-05T15:06:06Z","timestamp":1588691166000},"page":"674-681","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Analgesic effect of topical and subconjunctival morphine in dogs after phacoemulsification: A pilot study"],"prefix":"10.1111","volume":"23","author":[{"given":"Chloe B.","family":"Spertus","sequence":"first","affiliation":[{"name":"Department of Clinical Sciences College of Veterinary Medicine Cornell University Ithaca NY USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9220-251X","authenticated-orcid":false,"given":"Filipe","family":"Espinheira Gomes","sequence":"additional","affiliation":[{"name":"Department of Clinical Sciences College of Veterinary Medicine Cornell University Ithaca NY USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manuel","family":"Martin\u2010Flores","sequence":"additional","affiliation":[{"name":"Department of Clinical Sciences College of Veterinary Medicine Cornell University Ithaca NY USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephen A.","family":"Parry","sequence":"additional","affiliation":[{"name":"Statistical Consulting Unit College of Human Ecology 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