Diaphanoskopie bei der Zyklophotokoagulation

Wecker, Thomas; Jf, Jordan; Oterendorp, Christian van

doi:10.1007/s00347-015-0203-7

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…The transmission properties of the eyewall also play a major role, ensuring that the risk to the retina is much lower than with endoillumination. Transscleral illumination can be useful in tumor localization [38][39][40], tumor therapy [41,42], diaphanoscopically controlled cyclophotocoagulation [43], removal of vitreous [44,45], peeling of ILM (internal limiting membrane) [46], and localization of retinal breaks [47][48][49].…”

Section: Discussionmentioning

confidence: 99%

Determination of Correlated Color Temperature in Ex Vivo Porcine Eyes during Intraocular Illumination

Fehler

Heßling

2023

JCM

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(1) Background: In ophthalmic surgery, white light is mostly applied to illuminate the intraocular space, and ophthalmologists are comfortable working with it. Diaphanoscopic illumination changes the spectral composition of light, resulting in a change in the correlated color temperature (CCT) of the intraocular illumination. This color change makes it difficult for surgeons to recognize the structures in the eye. CCT during intraocular illumination has not yet been measured before, and it is the aim of this study to perform such measurement. (2) Methods: CCT was measured inside ex vivo porcine eyes during diaphanoscopic illumination and endoillumination using a current ophthalmic illumination system with a detection fiber inside the eye. By applying pressure on the eye with a diaphanoscopic fiber, the dependency of CCT on pressure was examined. (3) Results: The intraocular CCT values during endoillumination were 3923 K and 5407 K for the halogen and xenon lamps, respectively. During diaphanoscopic illumination, a strong unwanted red shift was observed, resulting in 2199 K and 2675 K for the xenon and the halogen lamps, respectively. Regarding different applied pressures, the CCT did not differ considerably. (4) Conclusions: This red shift should be compensated for in the development of new illumination systems since surgeons are used to white light illumination, which also simplifies the identification of retinal structures.

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Section: Discussionmentioning

confidence: 99%

Determination of Correlated Color Temperature in Ex Vivo Porcine Eyes during Intraocular Illumination

Fehler

Heßling

2023

JCM

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“…Due to many advantages and also despite the red-shift in the eye, diaphanoscopic illumination has many applications in the eye, e.g. tumor localization and therapy [ 3 – 8 ], localization of retinal breaks [ 9 , 10 ], removal of vitreous [ 11 , 12 ], peeling the internal limiting membrane [ 13 ] and diaphanoscopically guided cyclophotocoagulation [ 14 ]. The improvement of diaphanoscopic applications keeps going on, e.g.…”

Section: Introductionmentioning

confidence: 99%

Advancement of a RGBW-LED pen for diaphanoscopic illumination with adjustable color and intensity with tests on ex-vivo porcine eyes in terms of retinal risk and correlated color temperature

Fehler,

Schneider,

Hessling

2023

Biomed. Eng. Lett.

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Diaphanoscopic illumination has the disadvantage that the intraocular spectrum is red-shifted due to transmission properties of the eyewall. This red-shift should be counteracted as well as the retinal risk should be reduced with adjusting the spectral distribution of the illumination light. Likewise, the illumination spectrum has to be adapted to the eye color of the patient. With the further development of a red, green, blue and white light-emitting diode (RGBW-LED) diaphanoscopy pen, the intensities of each color can be varied. The functionality of the LED pen is tested on ex-vivo porcine eyes. By measuring the transmission of the sclera and choroidea, the photochemical and thermal retinal hazard and the maximum exposure time are determined according to the standard DIN EN ISO 15004-2:2007. With this RGBW-LED pen the intraocular space can be illuminated clearly of up to 1.5 h without potential retinal damage according to DIN EN ISO 15004:2-2007. By adjusting the illumination spectrum the red-shift can be compensated and retinal risk can be reduced. By varying the LED intensities, the correlated color temperature in the eye can also be varied from cold white to warm white appearance as comfortable to the ophthalmologist. Additionally, a simple adjustment of the illumination to the eye color of the patient is possible. Using this RGBW-LED pen, the ophthalmologist can set the desired intraocular color appearance, which he prefers for special applications. He could also adjust the illumination to the eye color as this would reduce retinal hazard.

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Diaphanoskopie am Auge

et al. 2017

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Diaphanoscopy is an almost 150-year-old diagnostic procedure based on the transillumination of the wall of the eyeball. One of the most important fields of application is the detection of tumors, which can be distinguished from the rest of the tissue by their reduced light transmission. Other fields of application include the diagnosis of retinal tears and holes, the detection of foreign bodies in the vitreous body and the control of coagulative measures in the ciliary body. In comparison to other techniques, diaphanoscopy requires only little effort and is very gentle on patients.

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Diaphanoskopie bei der Zyklophotokoagulation

Cited by 3 publications

References 12 publications

Determination of Correlated Color Temperature in Ex Vivo Porcine Eyes during Intraocular Illumination

Determination of Correlated Color Temperature in Ex Vivo Porcine Eyes during Intraocular Illumination

Advancement of a RGBW-LED pen for diaphanoscopic illumination with adjustable color and intensity with tests on ex-vivo porcine eyes in terms of retinal risk and correlated color temperature

Diaphanoskopie am Auge

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