PDF(Pubmed)
Abstract：
UNASSIGNED: This study investigates the relationship between ciliary muscle dynamics, thickness, and the regulation of intraocular pressure (IOP), focusing on the progression of cataracts and changes post-phacoemulsification. It explores how these factors impact canine ocular health, particularly in the context of cataract development and subsequent surgical intervention.
UNASSIGNED: Data was collected using Ultrasound Biomicroscopy (UBM) from dogs at the Veterinary Medical Teaching Hospital of Chungbuk National University, Korea. The study involved 57 eyes from 35 dogs, categorized into five groups: 13 normal eyes, 14 with incipient cataracts, 12 with immature cataracts, 6 with mature cataracts, and 12 post-phacoemulsification. UBM measurements assessed various ciliary muscle parameters including ciliary body axial length (CBAXL), ciliary process-sclera angle (CPSA), longitudinal fibers of ciliary muscle thickness (Lf-CMT), and longitudinal and radial fibers of ciliary muscle thickness (LRf-CMT).
UNASSIGNED: Findings indicated a decrease in CBAXL and an increase in Lf-CMT as cataracts progressed in severity. Post-phacoemulsification, there was a notable increase in CBAXL and a decrease in CPSA, Lf-CMT, and LRf-CMT, compared to both cataractous and normal eyes. Regression analysis revealed a significant positive association between CBAXL and IOP, alongside a negative association between Lf-CMT and IOP. These findings suggest that variations in ciliary muscle dynamics and thickness, as influenced by cataract progression and phacoemulsification, have distinct impacts on intraocular pressure.
UNASSIGNED: The study proposes that phacoemulsification leads to ciliary muscle contraction, causing an inward and anterior movement of the ciliary muscle. This movement results in the narrowing of the ciliary cleft and constriction of the unconventional outflow pathway, potentially causing an increased risk of glaucoma post-surgery. Our research contributes to understanding the anatomical and physiological changes in the canine eye following cataract surgery and underscores the importance of monitoring IOP and ciliary muscle dynamics in these patients.
UNASSIGNED: Data was collected using Ultrasound Biomicroscopy (UBM) from dogs at the Veterinary Medical Teaching Hospital of Chungbuk National University, Korea. The study involved 57 eyes from 35 dogs, categorized into five groups: 13 normal eyes, 14 with incipient cataracts, 12 with immature cataracts, 6 with mature cataracts, and 12 post-phacoemulsification. UBM measurements assessed various ciliary muscle parameters including ciliary body axial length (CBAXL), ciliary process-sclera angle (CPSA), longitudinal fibers of ciliary muscle thickness (Lf-CMT), and longitudinal and radial fibers of ciliary muscle thickness (LRf-CMT).
UNASSIGNED: Findings indicated a decrease in CBAXL and an increase in Lf-CMT as cataracts progressed in severity. Post-phacoemulsification, there was a notable increase in CBAXL and a decrease in CPSA, Lf-CMT, and LRf-CMT, compared to both cataractous and normal eyes. Regression analysis revealed a significant positive association between CBAXL and IOP, alongside a negative association between Lf-CMT and IOP. These findings suggest that variations in ciliary muscle dynamics and thickness, as influenced by cataract progression and phacoemulsification, have distinct impacts on intraocular pressure.
UNASSIGNED: The study proposes that phacoemulsification leads to ciliary muscle contraction, causing an inward and anterior movement of the ciliary muscle. This movement results in the narrowing of the ciliary cleft and constriction of the unconventional outflow pathway, potentially causing an increased risk of glaucoma post-surgery. Our research contributes to understanding the anatomical and physiological changes in the canine eye following cataract surgery and underscores the importance of monitoring IOP and ciliary muscle dynamics in these patients.
摘要：
■这项研究调查了睫状肌动力学之间的关系，厚度,和眼内压（IOP）的调节，重点关注白内障的进展和超声乳化后的变化。它探讨了这些因素如何影响犬科动物的眼部健康，特别是在白内障发展和随后的手术干预的背景下。
■数据是使用超声生物显微镜（UBM）从忠北国立大学兽医教学医院的狗中收集的，韩国。这项研究涉及35只狗的57只眼睛，分为五组:13只正常眼睛，14患有初期白内障，12患有不成熟的白内障，6患有成熟的白内障，和12超声乳化后。UBM测量评估各种睫状肌参数，包括睫状体轴向长度（CBAXL），睫状突-巩膜角（CPSA），睫状肌纵向纤维厚度（Lf-CMT），睫状肌厚度的纵向和放射状纤维（LRf-CMT）。
■研究结果表明，随着白内障严重程度的进展，CBAXL减少，Lf-CMT增加。超声乳化后,CBAXL显着增加，CPSA减少，Lf-CMT,和LRF-CMT,与白内障和正常眼睛相比。回归分析显示CBAXL和IOP之间存在显著正相关，Lf-CMT与IOP之间呈负相关。这些发现表明睫状肌动力学和厚度的变化，受白内障进展和超声乳化的影响，对眼压有明显影响。
■该研究提出超声乳化术导致睫状肌收缩，引起睫状肌的向内和向前运动。这种运动导致睫状裂隙的变窄和非常规流出路径的收缩，可能导致术后青光眼风险增加.我们的研究有助于了解白内障手术后犬眼的解剖和生理变化，并强调了监测这些患者眼压和睫状肌动力学的重要性。
■数据是使用超声生物显微镜（UBM）从忠北国立大学兽医教学医院的狗中收集的，韩国。这项研究涉及35只狗的57只眼睛，分为五组:13只正常眼睛，14患有初期白内障，12患有不成熟的白内障，6患有成熟的白内障，和12超声乳化后。UBM测量评估各种睫状肌参数，包括睫状体轴向长度（CBAXL），睫状突-巩膜角（CPSA），睫状肌纵向纤维厚度（Lf-CMT），睫状肌厚度的纵向和放射状纤维（LRf-CMT）。
■研究结果表明，随着白内障严重程度的进展，CBAXL减少，Lf-CMT增加。超声乳化后,CBAXL显着增加，CPSA减少，Lf-CMT,和LRF-CMT,与白内障和正常眼睛相比。回归分析显示CBAXL和IOP之间存在显著正相关，Lf-CMT与IOP之间呈负相关。这些发现表明睫状肌动力学和厚度的变化，受白内障进展和超声乳化的影响，对眼压有明显影响。
■该研究提出超声乳化术导致睫状肌收缩，引起睫状肌的向内和向前运动。这种运动导致睫状裂隙的变窄和非常规流出路径的收缩，可能导致术后青光眼风险增加.我们的研究有助于了解白内障手术后犬眼的解剖和生理变化，并强调了监测这些患者眼压和睫状肌动力学的重要性。
