Optical Modeling of Focal-Point Divergence between Surgical Nd:YAG and Aiming Lasers

Yaakov Mandelbaum; Yaakov Slushetz; Edward Averbukh; Jaime Levy; Rani Patal; Yoel Arieli

doi:10.1117/12.3082215

Optical Modeling of Focal-Point Divergence between Surgical Nd:YAG and Aiming Lasers

Yaakov Mandelbaum^*
, Yaakov Slushetz
, Edward Averbukh
, Jaime Levy
, Rani Patal
, Yoel Arieli

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Divergence between the Nd:YAG treatment beam focal-point and the aiming beams’ intersection, is modeled combining analytical chromatic-aberration theory and ray-tracing. Divergence reverses sign at 8 mm depth, reaching 305 µm posteriorly. The resulting calibration curve enables safe posterior-segment laser use.

Original language	English
Title of host publication	Ophthalmic Technologies XXXVI
Editors	Daniel X. Hammer, Derek Nankivil, Yuankai K. Tao
Publisher	SPIE
ISBN (Electronic)	9781510695757
DOIs	https://doi.org/10.1117/12.3082215
State	Published - 5 Mar 2026
Externally published	Yes
Event	36th Ophthalmic Technologies - San Francisco, United States Duration: 17 Jan 2026 → 19 Jan 2026

Publication series

Name	Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume	13831
ISSN (Print)	1605-7422
ISSN (Electronic)	2410-9045

Conference

Conference	36th Ophthalmic Technologies
Country/Territory	United States
City	San Francisco
Period	17/01/26 → 19/01/26

Bibliographical note

Publisher Copyright:
© 2026 SPIE. All rights reserved.

Keywords

Nd:YAG laser
aiming beam
chromatic aberration
ocular surgery
optical modeling
ray-tracing

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10.1117/12.3082215

Cite this

Mandelbaum, Y., Slushetz, Y., Averbukh, E., Levy, J., Patal, R., & Arieli, Y. (2026). Optical Modeling of Focal-Point Divergence between Surgical Nd:YAG and Aiming Lasers. In D. X. Hammer, D. Nankivil, & Y. K. Tao (Eds.), Ophthalmic Technologies XXXVI Article 138310U (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 13831). SPIE. https://doi.org/10.1117/12.3082215

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abstract = "Divergence between the Nd:YAG treatment beam focal-point and the aiming beams{\textquoteright} intersection, is modeled combining analytical chromatic-aberration theory and ray-tracing. Divergence reverses sign at 8 mm depth, reaching 305 µm posteriorly. The resulting calibration curve enables safe posterior-segment laser use.",

keywords = "Nd:YAG laser, aiming beam, chromatic aberration, ocular surgery, optical modeling, ray-tracing",

author = "Yaakov Mandelbaum and Yaakov Slushetz and Edward Averbukh and Jaime Levy and Rani Patal and Yoel Arieli",

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Mandelbaum, Y, Slushetz, Y, Averbukh, E, Levy, J, Patal, R & Arieli, Y 2026, Optical Modeling of Focal-Point Divergence between Surgical Nd:YAG and Aiming Lasers. in DX Hammer, D Nankivil & YK Tao (eds), Ophthalmic Technologies XXXVI., 138310U, Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 13831, SPIE, 36th Ophthalmic Technologies, San Francisco, United States, 17/01/26. https://doi.org/10.1117/12.3082215

Optical Modeling of Focal-Point Divergence between Surgical Nd:YAG and Aiming Lasers. / Mandelbaum, Yaakov; Slushetz, Yaakov; Averbukh, Edward et al.
Ophthalmic Technologies XXXVI. ed. / Daniel X. Hammer; Derek Nankivil; Yuankai K. Tao. SPIE, 2026. 138310U (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 13831).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Patal, Rani

AU - Arieli, Yoel

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KW - chromatic aberration

KW - ocular surgery

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PB - SPIE

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Optical Modeling of Focal-Point Divergence between Surgical Nd:YAG and Aiming Lasers

Abstract

Publication series

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Bibliographical note

Keywords

Access to Document

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