34th APACRS-2022 KSCRS Joint Meeting Final Program

FILM FESTIVAL 81 FF3-06 AcuSimX – An artificial intelligence software to predict post refractive surgery corneal stiffness Anuj SATIJA India AcusSimX is our novel predictive software based on inverse finite element method (iFEM) and aritifical intelligence (AI) used for estimation of postoperative corneal stiffness (CS) after SMILE, LASIK, and PRK. It constructs a patient specific iFEM model using preoperative Corvis ST deformation data, Pentacam HR tomography 3-D volume, and aspheric ablation profile. Postoperative CS is computed using preop corneal biomechanical and surgical 3-D mesh models specific to each surgery. The computed CS was refined using population database of post-refractive surgery CS outcomes and Lasso regression AI (LrAI). The intraclass correlation (ICC) between measured and predicted postop CS was found to be 0.91 which improved to 0.95 overall after LrAI adjustment. Thus, AcuSimX is the first biomechanical simulation software for refractive surgery clinics to avoid ectasia. FF3-07 Understanding Topography-guided LASIK with a New Planning Software: the iSMART Contoura LASIK Zain KHATIB India Topography-guided LASIK has always been a sort of enigma in terms of its understanding and interpretation. Contoura LASIK is one such form of FDA approved topography-guided LASIK on the Wavelight platform for virgin eyes. In spite of promising so much, its complete application has not yet been fully understood and cannot be done for all cases. The iSMART Contoura LASIK is a software designed by me aimed specifically to plan and treat eyes with Contoura LASIK. This software, besides assisting in basic LASIK planning, also studies the higher-order aberrations of the eye and applies vector mathematics to appropriately modify the final treatment refraction. How all this is done and what is the logical concept behind it is explained in detail in the video. The software guides almost everything related to LASIK planning including safety parameters such as PTA and RSB, the ring and stop size for microkeratome needed, femto flap diameter, and topography-guided LASIK planning. FF3-08 Help Me I Am Stuck! Techniques and tips for managing retained lenticules in SMILE Sheetal BRAR India SMILE is generally considered a safe procedure with a low incidence of intraoperative complications in the hands of expert surgeons. Of the potential complications of SMILE, failure to extract the lenticule or a part of it presents a unique complication known as stuck/retained lenticule. This challenging situation can be a nightmare for even the most experienced surgeons, wherein both the lenticule and surgeon are stuck and need help. In this video, we discuss the various management strategies to manage retained lenticules or their fragments in order to manage the irregular astigmatism and induce the desired effect of SMILE. This may be a useful teaching video for beginners as well as advanced surgeons in SMILE surgery. FF3-09 Next Generation Crosslinking Calculator for Titration of Ultraviolet Energy (NXT- UVA) in Thin Keratoconic Cornea Pooja KHAMAR India We custom-built a calculator for deciding the UV “on” time to titrate the incident energy density while crosslinking (CXL) thin keratoconic corneas. Corneal tomography, visual outcomes, and specular microscopy were utilized to determine its safety and efficacy. The NXT Calculator provides a safe, inexpensive, and user-friendly strategy for performing CXL in thin corneas. FF3-10 Burr por Favor!!! Versatility of Burr Use in Corneal Diseases Samruddhi DANI India The diamond burr has been commonly used in ophthalmology for the treatment of recurrent corneal erosions with minimal recurrence rates. It is a safe and inexpensive instrument. We present a multitude of unique corneal conditions that can be treated using the diamond burr with excellent postoperative outcomes. These include recurrent corneal erosions, shield ulcers, band shaped keratopathy, post pterygium corneal scars with irregular surface, and epithelial hypertrophy post keratoplasty. The use of diamond burr requires minimal surgical skill, does not pose the risk of corneal perforation, scarring or refractive shift, and does not hamper retreatments later, if required. It is safe to perform in lesions involving the visual axis. A vast array of conditions can benefit from this versatile instrument.