Endoillumination during vitrectomy and phototoxicity thresholds
نویسندگان
چکیده
منابع مشابه
Endoillumination during vitrectomy and phototoxicity thresholds.
AIM To assess the retinal phototoxicity hazards of and to provide safety margins for endoillumination during vitrectomy. METHODS The absolute power and spectral distribution from various light sources and filter combinations that are commercially available for vitreous surgery were measured. The maximal exposure times based on the ICNIRP safety guidelines for photochemical and thermal injury ...
متن کاملVitreoretinal instruments: vitrectomy cutters, endoillumination and wide-angle viewing systems
There have been many advances in vitreoretinal surgery since Machemer introduced the concept of pars plana vitrectomy, in 1971. Of particular interest are the changes in the vitrectomy cutters, their fluidics interaction, the wide-angle viewing systems and the evolution of endoillumination through the past decade and notably in the last few years. The indications of 27-gauge surgery have expand...
متن کاملNitrous oxide and internal tamponade during vitrectomy.
We analysed the nitrous oxide composition of the intraocular gas bubble following vitrectomy and fluid-air exchange in 12 patients. Samples were taken under standardised conditions at 20 minutes after completion of the fluid-air exchange. Analysis was conducted by a Medishield MS2 mass spectrometer. The percentage composition of nitrous oxide in the samples varied between 4 and 21% (mean 9%). T...
متن کاملSCIENTIFIC REPORT The effects of indocyanine green and endoillumination on rabbit retina: an electroretinographic and histological study
Aim: To evaluate the functional and morphological retinal toxicity associated with intravitreal injection of indocyanine green (ICG) dye in rabbit eyes during vitrectomy with endoillumination. Methods: 20 eyes of 10 New Zealand pigmented rabbits were used in the study. All eyes underwent pars plana vitrectomy and removal of posterior vitreous cortex under endoillumination. In one eye of each ra...
متن کاملOcular phototoxicity.
The human eye is constantly exposed to sunlight and artificial lighting. Therefore the eye is exposed to UV-B (295-320 nm), UV-A (320-400 nm), and visible light (400-700 nm). Light is transmitted through the eye and then signals the brain directing both sight and circadian rhythm. Therefore light absorbed by the eye must be benign. Damage to the young and adult eye by intense ambient light is a...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 2000
ISSN: 0007-1161
DOI: 10.1136/bjo.84.12.1372