New illuminations approaches with single-use micro LEDs endoilluminators for the pars plana vitrectomy

Philipp Simon Koelbl; Frank H. J. Koch; Christian Lingenfelder; Martin Hessling

doi:10.1117/12.2288346

19 February 2018 New illuminations approaches with single-use micro LEDs endoilluminators for the pars plana vitrectomy

Philipp Simon Koelbl, Frank H. J. Koch, Christian Lingenfelder, Martin Hessling

Proceedings Volume 10474, Ophthalmic Technologies XXVIII; 104741I (2018) https://doi.org/10.1117/12.2288346
Event: SPIE BiOS, 2018, San Francisco, California, United States

Abstract

The illumination of the intraocular space during pars plana vitrectomy always bears the risk of retina damage by irradiation. Conventional illumination systems consist of an external light source and an optical fiber to transfer the visible light (radiation) into the eye. Often xenon arc and halogen lamps are employed for this application with some disadvantageous properties like high phototoxicity and low efficiency. Therefore, we propose to generate the light directly within the eye by inserting a white micro LED with a diameter of 0.6 mm. The LED offers a luminous flux of 0.6 lm of white light with a blue peak @ 450 nm and a yellow peak @ 555 nm. The presented prototypes fit through a standard 23 G trocar and are the first intraocular light sources worldwide. Two different single-use approaches have already been developed: a handguided and a chandelier device. The hand-guided applicator enables a directly navigation and illumination up to a working distance of 6 mm. The chandelier device is much smaller and does not need an active navigation of the light cone. The brightness and homogeneity of the illumination of these LED devices have been successfully tested on porcine eyes. Presented measurements and calculations prove that even for high LED currents and small distances to the retina these intraocular micro LED devices expose the retina to less hazard than conventional illumination sources like fiber based xenon systems. Even under the worst circumstances application durations of 180 hours would be justifiable.

Citation Download Citation

Philipp Simon Koelbl, Frank H. J. Koch, Christian Lingenfelder, and Martin Hessling "New illuminations approaches with single-use micro LEDs endoilluminators for the pars plana vitrectomy", Proc. SPIE 10474, Ophthalmic Technologies XXVIII, 104741I (19 February 2018); https://doi.org/10.1117/12.2288346

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Light emitting diodes

Light sources

Retina

Prototyping

Eye

Oxygen

Photons

Show All Keywords

Keywords/Phrases

Search In:

Publication Years