Illumination levels in commonly used ophthalmic devices.

Autor: Kanclerz P; Helsinki Retina Research Group, University of Helsinki, Helsinki, Finland. p.kanclerz@gumed.edu.pl.; Department of Ophthalmology, Hygeia Clinic, ul. Jaśkowa Dolina 57, 80-286, Gdańsk, Poland. p.kanclerz@gumed.edu.pl., Bazylczyk N; Department of Ophthalmology, Hygeia Clinic, ul. Jaśkowa Dolina 57, 80-286, Gdańsk, Poland.
Jazyk: angličtina
Zdroj: Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie [Graefes Arch Clin Exp Ophthalmol] 2024 Mar; Vol. 262 (3), pp. 995-996. Date of Electronic Publication: 2023 Aug 07.
DOI: 10.1007/s00417-023-06189-9
Abstrakt: 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.
(© 2023. The Author(s).)
Databáze: MEDLINE
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