Guedes Jaime, Fernandes Bruno F, Mora-Paez Denisse J, Brazuna Rodrigo, da Costa Neto Alexandre Batista, Amaral Dillan Cunha, Faneli Adriano Cypriano, Oliveira Ricardo Danilo Chagas, de Alencar Costa Filho Adroaldo, Dantas Adalmir Morterá
Department of Ophthalmology, Federal University of Rio de Janeiro, Rio de Janeiro 21941-971, RJ, Brazil.
Glaucoma Research Center, Wills Eye Hospital, Philadelphia, PA 19107, USA.
Vision (Basel). 2024 May 8;8(2):30. doi: 10.3390/vision8020030.
This study aimed to determine the pars plana length in postmortem human eyes using advanced morphometric techniques and correlate demographics to ocular metrics such as age, sex, ethnicity, and axial length. Between February and July 2005, we conducted a cross-sectional observational study on 46 human cadaver eyes deemed unsuitable for transplant by the SBO Eye Bank. The morphometric analysis was performed on projected images using a surgical microscope and a video-microscopy system with a 20.5:1 correction factor. The pars plana length was measured three times per quadrant, with the final value being the mean of these measurements. Of the 46 eyes collected, 9 were unsuitable for the study due to technical constraints in conducting intraocular measurements. Overall, the average axial length was 25.20 mm. The average pars plana length was 3.8 mm in all quadrants, with no measurements below 2.8 mm or above 4.9 mm. There were no statistically significant variations across quadrants or with age, sex, axial length, or laterality. Accurately defining the pars plana dimensions is crucial for safely accessing the posterior segment of the eye and minimizing complications during intraocular procedures, such as intravitreal injections and vitreoretinal surgeries.
本研究旨在运用先进的形态测量技术测定人死后眼球的睫状体平坦部长度，并将人口统计学特征与年龄、性别、种族和眼轴长度等眼部指标相关联。2005年2月至7月期间，我们对南方生物眼库认定不适于移植的46只人尸体眼球进行了一项横断面观察研究。使用手术显微镜和具有20.5:1校正因子的视频显微镜系统对投影图像进行形态测量分析。每个象限的睫状体平坦部长度测量三次，最终值为这些测量值的平均值。在收集的46只眼球中，有9只因进行眼内测量时存在技术限制而不适于该研究。总体而言，平均眼轴长度为25.20毫米。所有象限的平均睫状体平坦部长度为3.8毫米，测量值均未低于2.8毫米或高于4.9毫米。各象限之间以及与年龄、性别、眼轴长度或左右侧别之间均无统计学上的显著差异。准确界定睫状体平坦部尺寸对于安全进入眼球后段并将眼内手术（如玻璃体内注射和玻璃体视网膜手术）期间的并发症降至最低至关重要。
