1. Feature Of The Week 01/18/15: An Integrated Optical Coherence Tomography-Gas Nozzle System for Surgical Laser Ablation Applications

    Feature Of The Week 01/18/15: An Integrated Optical Coherence Tomography-Gas Nozzle System for Surgical Laser Ablation Applications

    Gas assisted laser machining of materials is a common practice in the manufacturing industry. Advantages in using gas assistance include reducing the likelihood of flare-ups in flammable materials and clearing away ablated material in the cutting path. Current surgical procedures and research do not take advantage of this and in the case for resecting osseous tissue, gas assisted ablation can help minimize charring and clear away debris from the surgical site. In the context of neurosurgery, the objective is to cut through osseous tissue without damaging the underlying neural structures. Different inert gas flow rates used in laser machining could cause deformations in compliant materials. Complications may arise during surgical procedures if the dura and spinal cord are damaged by these deformations. We present preliminary spinal deformation findings for various gas flow rates by using optical coherence tomography to measure the depression depth at the site of gas delivery.

    For more information see recent Article. Courtesy ofRonnie Wong and Victor Yang from Ryerson University

    Recent Comments

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    On 1/19/15 Scott Rowe said:
    There was a lot of work done in the 80's and 90's on gas assisted ablation for PRK and LASIK. Some good and bad outcomes, one of which was that the plume of hot remodeled tissue went everywhere and was a biohazard! Mfgrs eventually went to a vacuum system for plume removal, which is what you see today.
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    On 8/31/15 susruta2002 said:
    Dear editor OCT news, We have done clinical research work in OCT in few ocular conditions. I have used OCT for newer applications like grading uveitis, posterior tenon injection, Intraocular lens position evaluation.
    I would like to share the abstracts (published in leading ophthalmic journals) some of them in your website so that it reaches wide range of people interested in OCT application and research. I would like to know if its possible.

    Kumar DA et al. Aqueous reaction quantification after phacoemulsification: Fourier-domain optical coherence tomography versus slitlamp biomicroscopy.J Cataract Refract Surg. 2014 Dec;40(12):2082-90. doi: 10.1016/j.jcrs.2014.03.032. Epub 2014 Oct 22.

    Kumar DA et al. Anterior segment optical coherence tomography for imaging the sub-Tenon space.Ophthalmic Res. 2013;50(4):231-4. doi: 10.1159/000354381. Epub 2013 Oct 22.

    Kumar DA et alEvaluation of intraocular lens tilt with anterior segment optical coherence tomography.Am J Ophthalmol. 2011 Mar;151(3):406-12.e2. doi: 10.1016/j.ajo.2010.09.013. Epub 2011 Jan 13

    Best Regards
    Dr Dhivya Ashok Kumar MBBS,MD(AIIMS),FICO
    Dr Agarwal eye hospital ,chennai, India
    Dear Ms. Kumar. Thank you for your comment. Please note all three articles you mentioned above are already on OCT news. See for example this link http://www.octnews.org/topic/profile/dhivya-ashok-kumar/

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