Vol. 28 No. 2 (2025) Cover Image
Vol. 28 No. 2 (2025)

Published: June 30, 2025

Pages: 276-280

Articles

White Laser in Ophthalmology

Abstract

This research focuses on enhancing the diagnostic power of the slit lamp, a fundamental ophthalmic instrument, by replacing its traditional halogen light source with a cutting-edge white laser. The objective of this modification is to significantly improve the brightness, intensity, and color accuracy, which are crucial for distinguishing fine ocular details during eye examinations. White laser technology offers a more stable, energy-efficient light source with reduced maintenance needs, making it a valuable upgrade over conventional systems. As part of this redesign, the optical system will be optimized with new filters, lenses, and heat management techniques to accommodate the white laser. Additionally, integrating a high-resolution digital camera with the enhanced illumination system is expected to provide sharper, more accurate imaging for better diagnosis. The anticipated outcome is a transformative improvement in ocular diagnostics, leading to earlier and more precise detection of eye conditions. This advancement holds promise for both patients, through better care, and ophthalmologists, through increased diagnostic efficiency. Challenges in implementation and potential solutions are also considered.

References

  1. World Health Organization, “WHO releases new global estimates on visual impairment,” https://www.emro.who.int/control-and-preventions-of-blindness-and-deafness/announcements/global-estimates-on-visual-impairment.html, Accessed: Sep. 28, 2024.
  2. A. Pathipati and J. Tsai, “Eye care industry analysis,” J. Acad. Ophthalmol., vol. 10, no. 1, Jan. 2018. doi:10.1055/s-0037-1620237
  3. Myopia Profile, “Understanding ocular wavefront aberrations,” https://www.myopiaprofile.com/articles/understanding-ocular-wavefront-aberrations, 2020.
  4. S. Ruparelia, “A medical student’s guide to the slit lamp examination,” Dalhousie Med. J., vol. 49, no. 1, Feb. 2023. doi:10.15273/dmj.Vol49No1.11641
  5. T. Kuriakose, “The slit lamp examination,” in Clinical Insights and Examination Techniques in Ophthalmology. Singapore: Springer, 2020, pp. 55–62. doi:10.1007/978-981-15-2890-3_6
  6. A. B. Biradar, A. Das, and A. Adeeb, “Slit lamp photography for objective assessment of topical eye disorders,” Indian J. Clin. Exp. Ophthalmol., vol. 7, no. 4, pp. 648–654, Jan. 2022. doi:10.18231/j.ijceo.2021.130
  7. F. Fan, S. Turkdogan, Z. Liu, D. Shelhammer, and C.-Z. Ning, “A monolithic white laser,” Nat. Nanotechnol., vol. 10, no. 9, pp. 796–803, Sep. 2015. doi:10.1038/nnano.2015.149
  8. B. Chen, L. Hong, C. Hu, and Z. Li, “White laser realized via synergic second- and third-order nonlinearities,” Research, vol. 2021, Jan. 2021. doi:10.34133/2021/1539730
  9. R. Paschotta, “Beam quality,” RP Photonics Encyclopedia, https://doi.org/10.61835/8mq, Accessed: Sep. 28, 2024.
  10. Y. Ye et al., “Resolution of slit-lamp microscopy photography using various cameras,” Eye Contact Lens Sci. Clin. Pract., vol. 39, no. 3, pp. 205–213, May 2013. doi:10.1097/icl.0b013e318286bc0f
  11. J.-L. Basdevant and J. Dalibard, “Laser cooling and trapping,” in Springer eBooks: Introduction to Physics, Cham: Springer, 2019, pp. 199–209. doi:10.1007/978-3-030-13724-3_20
  12. B. Chen, L. Hong, C. Hu, and Z. Li, “White laser realized via synergic second- and third-order nonlinearities,” Research, vol. 2021, Jan. 2021. doi:10.34133/2021/1539730
  13. D. De Luca, I. Delfino, and M. Lepore, “Laser safety standards and measurements of hazard parameters for medical lasers,” Int. J. Opt. Appl., vol. 2, no. 6, pp. 80–86, Jan. 2013. doi:10.5923/j.optics.20120206.01
  14. C. Liu et al., “Novel bipolar-type direct AC–AC converter topology based on non-differential AC choppers,” IEEE Trans. Power Electron., vol. 34, no. 10, pp. 9585–9599, Oct. 2019. doi:10.1109/TPEL.2018.2890581
  15. H. Alwazani, S. Bahanshal, and M. A. Majid, “Design of YAG coated laser diode driver with feedback mechanism,” in Proc. ICCISCI, Apr. 2019. doi:10.1109/ICCISCI.2019.8716407
  16. M. Micic, P. Atanasijevic, and P. Mihailovic, “Laser diode driver on a programmable system on a chip,” Rev. Sci. Instrum., vol. 95, no. 3, Mar. 2024. doi:10.1063/5.0184666
  17. A. Kakehashi, M. Takezawa, and J. Akiba, “Classification of posterior vitreous detachment,” Clin. Ophthalmol., Dec. 2013, p. 1. doi:10.2147/OPTH.S54021
  18. K. Thyagarajan and A. Ghatak, “Properties of lasers,” in Graduate Texts in Physics, Cham: Springer, 2010, pp. 263–275. doi:10.1007/978-1-4419-6442-7_10
  19. T. Gfroerer and M. Bergthold, “Laser diode coherence,” Am. J. Phys., vol. 88, no. 9, pp. 740–745, Sep. 2020. doi:10.1119/10.0001487
  20. N. Kakitsuba, “Comfortable indoor lighting conditions for LED lights evaluated from psychological and physiological responses,” Appl. Ergon., vol. 82, art. 102941, Jan. 2020. doi:10.1016/j.apergo.2019.102941