Assessment through thermal model of depth confined retinal laser photocoagulation assisted with adaptive optics

Antoine Chen; Benoît C. Forget; Pedro Mecê; Michel Paques; Serge Meimon; Cyril Petit

doi:10.1117/12.2578239

5 March 2021 Assessment through thermal model of depth confined retinal laser photocoagulation assisted with adaptive optics

Antoine Chen, Benoît C. Forget, Pedro Mecê, Michel Paques, Serge Meimon, Cyril Petit

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Proceedings Volume 11623, Ophthalmic Technologies XXXI; 1162310 (2021) https://doi.org/10.1117/12.2578239
Event: SPIE BiOS, 2021, Online Only

Abstract

Retinal laser photocoagulation (LP) is commonly used to treat Diabetic Macular Edema. Yet, it is impossible with current lasers to prevent some degree of damage to healthy surrounding tissues. We evaluate through simulation the improvement in thermal confinement of the photocoagulation effects, using Adaptive Optics (AO), a technology that corrects eye’s aberrations in real-time, to assist LP system. Based on experimental ocular aberrations data and realistic retinal diffusion model, we simulate the photocoagulation operation and compare LP thermal confinement in laser systems without and with AO correction. Resulting sizes of thermal damage show an improvement of depth confinement, from a 300μm extension with current systems, to a 70μm depth size (limited to therapeutic target) with AO corrected system. These results underline the need of AO for focal LP to ensure thermal depth confinement and guarantee safe operation.

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Antoine Chen, Benoît C. Forget, Pedro Mecê, Michel Paques, Serge Meimon, and Cyril Petit "Assessment through thermal model of depth confined retinal laser photocoagulation assisted with adaptive optics", Proc. SPIE 11623, Ophthalmic Technologies XXXI, 1162310 (5 March 2021); https://doi.org/10.1117/12.2578239

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KEYWORDS

Adaptive optics

Laser coagulation

Thermal modeling

Data modeling

Eye models

Optical simulations

Retina

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