title: Quantitative measurement of retinal thickness in patients with diabetic macular edema is useful for evaluation of therapeutic agents.
abstract: The effect of lisinopril (an angiotensin-converting enzyme inhibitor) on diabetic macular edema (DME) was investigated by quantitative measurement of macular thickness. In a nonrandomized clinical trial, 19 normotensive type 2 diabetic patients with DME prospectively received oral lisinopril therapy for 2 months. Another 10 normotensive type 2 diabetic patients with similar DME were prospectively followed for two months without treatment. Central macular thickness was measured with a retinal thickness analyzer (RTA). In the lisinopril group, visual acuity improved by two lines or more in two out of 19 eyes (11%), was unchanged in 15 eyes (78%), and deteriorated by two lines or more in two eyes (11%). The mean central macular thickness was significantly reduced after 2 months of treatment (381.3 +/- 121.1 microm) compared with that before administration (475.2 +/- 171.0 microm, P = 0.0093). In the control group, central macular thickness was not significantly decreased after 2 months (458.5 +/- 113.7 microm, P = 0.2178) compared with the baseline value (464.7 +/- 152.2). Fluorescein angiography showed that macular leakage was decreased in 10 patients from the lisinopril group (53%) and was unchanged in nine patients (47%). There was a significant difference of central macular thickness between the patients with and without improvement of macular leakage (P = 0.0040). Lisinopril therapy may reduce macular thickness in patients with DME, as shown by this quantitative study. In addition, quantitative measurement of retinal thickness is useful when evaluating therapeutic agents for DME.
authors.affiliation: Department of Ophthalmology, Diabetes Center, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan. tfunatsu@nifty.com
authors.forename: Hideharu
authors.initials: H
authors.lastname: Funatsu
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Yamashita
authors.forename: Erika
authors.initials: E
authors.lastname: Shimizu
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Mimura
authors.forename: Shinko
authors.initials: S
authors.lastname: Nakamura
authors.forename: Sadao
authors.initials: S
authors.lastname: Hori
mesh_terms: D000368:Aged; D000806:Angiotensin-Converting Enzyme Inhibitors / Q000627:therapeutic use*; D003930:Diabetic Retinopathy / Q000175:diagnosis* / Q000188:drug therapy*; D003936:Diagnosis, Computer-Assisted / Q000295:instrumentation; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation*; D005260:Female; D005451:Fluorescein Angiography; D006801:Humans; D007834:Lasers; D017706:Lisinopril / Q000627:therapeutic use*; D008269:Macular Edema / Q000175:diagnosis* / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D012160:Retina / Q000473:pathology*; D016896:Treatment Outcome
chemical_list: D000806:Angiotensin-Converting Enzyme Inhibitors; D017706:Lisinopril