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Effect of Cyclopentolate on In Vivo Schlemm Canal Microarchitecture in Healthy Subjects.
Rosman, Michael S; Skaat, Alon; Chien, Jason L; Ghassibi, Mark P; Sarimiye, Tarela F; Ritch, Robert; Liebmann, Jeffrey M; Park, Sung Chul.
Afiliación
  • Rosman MS; *Moise and Chella Safra Advanced Ocular Imaging Laboratory, Einhorn Clinical Research Center, New York Eye and Ear Infirmary of Mount Sinai §Bernard and Shirlee Brown Glaucoma Research Laboratory, Harkness Eye Institute, Columbia University Medical Center ∥Department of Ophthalmology, Manhattan Eye, Ear and Throat Hospital, New York ¶Department of Ophthalmology, Hofstra Northwell School of Medicine, Hempstead, NY †Goldschleger Eye Institute, Sheba Medical Center, Sackler Faculty of Medicine, Tel
J Glaucoma ; 26(2): 133-137, 2017 Feb.
Article en En | MEDLINE | ID: mdl-27906812
PURPOSE: To characterize the in vivo effect of cyclopentolate on the microstructure of Schlemm canal (SC) in healthy eyes. METHODS: For healthy subjects, 81 serial horizontal enhanced depth imaging optical coherence tomography B-scans (interval between scans, ∼35 µm) of the nasal corneoscleral limbal area were obtained before and 1 hour after cyclopentolate 1% administration in 1 eye. The structures of aqueous and blood vessels in each scan were used as landmarks to select 50 overlapping scans between the 2 sets of 81 serial scans (before and after cyclopentolate administration). The SC cross-sectional area was measured in each of the 50 selected scans. After 3-dimensional reconstruction, SC volume was determined. RESULTS: Twelve eyes (12 healthy subjects) were imaged successfully before and after cyclopentolate administration. Mean age was 27.8±4.9 years (range, 25 to 38 y). Following cyclopentolate administration, mean intraocular pressure did not change significantly (13.9±1.5 to 14.2±1.5 mm Hg; P=0.19). Mean SC cross-sectional area decreased by 17%, from 3563±706 to 2959±460 µm (P<0.001). Mean SC volume in the overlapping area (approximately 1.7 mm of circumferential length of SC) decreased from 6,164,061±1,220,787 to 5,119,462±794,763 µm (P<0.001). The decrease in the mean SC cross-sectional area after cyclopentolate administration was greater in eyes with larger baseline SC cross-sectional area (P<0.001, R=0.873). CONCLUSIONS: Cyclopentolate causes a reduction in SC dimensions in healthy eyes. Future studies are warranted to determine the exact mechanism(s) of this change.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Limbo de la Córnea / Ciclopentolato / Midriáticos Tipo de estudio: Observational_studies Límite: Adult / Female / Humans / Male Idioma: En Revista: J Glaucoma Asunto de la revista: OFTALMOLOGIA Año: 2017 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Limbo de la Córnea / Ciclopentolato / Midriáticos Tipo de estudio: Observational_studies Límite: Adult / Female / Humans / Male Idioma: En Revista: J Glaucoma Asunto de la revista: OFTALMOLOGIA Año: 2017 Tipo del documento: Article Pais de publicación: Estados Unidos