Related Experiment Video
Updated: Jul 15, 2025

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT
Published on: August 4, 2018
Bessel Beams in Ophthalmology: A Review
C S Suchand Sandeep1, Ahmad Khairyanto1, Tin Aung2,3
1Centre for Optical and Laser Engineering, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore.
Non-diffractive Bessel beams offer improved resolution for imaging in scattering media, particularly in ophthalmology. This review explores their theoretical basis and applications, comparing them to current systems.
Area of Science:
- Optics and Photonics
- Biomedical Imaging
- Ophthalmology
Background:
- Conventional imaging systems face resolution limits due to diffraction, exacerbated in scattering media like biological tissues.
- Weak signal-to-noise ratios pose significant challenges for precise biomedical imaging.
- Non-diffractive beams, including Bessel, Airy, vortex, and Mathieu beams, offer potential solutions to these limitations.
Purpose of the Study:
- To review the theoretical foundations of non-diffractive Bessel beams.
- To explore the diverse ophthalmological applications of Bessel beams.
- To compare Bessel beam techniques with existing state-of-the-art ophthalmological systems.
Main Methods:
- Theoretical review of non-diffractive Bessel beam properties.
- Literature survey of ophthalmological applications utilizing Bessel beams.
- Comparative analysis of Bessel beam techniques against conventional methods.
Main Results:
- Bessel beams demonstrate potential for enhanced resolution and signal-to-noise ratios in ophthalmological imaging.
- Various applications showcase the versatility of Bessel beams in addressing specific ocular imaging challenges.
- Comparison highlights advantages and disadvantages relative to current ophthalmological imaging modalities.
Conclusions:
- Non-diffractive Bessel beams represent a promising advancement for high-resolution ophthalmological imaging.
- Further development and application of Bessel beams could significantly impact diagnostic capabilities in eye care.
- The review provides insights into current progress and future directions for non-diffractive beams in ophthalmology.
Related Concept Videos
Angle Closure Glaucoma: Treatment
Open Angle Glaucoma: Treatment
Drugs such as carbonic anhydrase inhibitors, α2- and...
Glaucoma: Overview

