Helsinki Retina Research Group, University of Helsinki, Helsinki, Finland.
Department of Ophthalmology, Hygeia Clinic, ul. Jaśkowa Dolina 57, 80-286, Gdańsk, Poland.
Graefes Arch Clin Exp Ophthalmol. 2024 Mar;262(3):995-996. doi: 10.1007/s00417-023-06189-9. Epub 2023 Aug 7.
Pupil diameter is a key parameter for corneal and multifocal intraocular lens surgery. Many devices are dedicated to measure the pupil size, but do not specify the illumination during capture. The aim of this study was to present illumination levels in routinely used ophthalmic devices which present pupil sizes. To obtain measurements, the lux meter was placed in the chin rest in the corneal plane and the room was completely dimmed. Ten measurements were taken for each device. The illumination levels for white and red Placido disk corneal topographers were 1253.1 ± 0.2 and 329.0 ± 0.2 lux, respectively (both photopic conditions). Scheimpflug corneal tomography should be considered as a mesopic measurement (14.5 ± 0.1 lux). Optical coherence tomography and autorefractometry are scotopic measurements (0.4-0.6 lux). We postulate that producers should provide illumination levels of their devices measuring pupil size. Moreover, when mentioning a pupil size, one should consider presenting to what lighting conditions it refers to.
瞳孔直径是角膜和多焦点人工晶状体手术的关键参数。许多设备专门用于测量瞳孔大小，但在捕获过程中未指定照明。本研究旨在介绍常规使用的显示瞳孔大小的眼科设备的照明水平。为了获得测量值，将照度计放置在角膜平面的下巴托上，并将房间完全调暗。每种设备各进行 10 次测量。白色和红色 Placido 盘角膜地形图仪的照明水平分别为 1253.1 ± 0.2 和 329.0 ± 0.2 勒克斯（均为明视觉条件）。Scheimpflug 角膜断层扫描应被视为中间视觉测量值（14.5 ± 0.1 勒克斯）。光学相干断层扫描和自动折射计是暗视觉测量值（0.4-0.6 勒克斯）。我们假设，生产厂家应该提供测量瞳孔大小的设备的照明水平。此外，当提到瞳孔大小时，应该考虑到它是在什么光照条件下提到的。
