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CATARACT-IFemtosecond Laser Assisted Cataract Surgery: Our Initial Experience with 109 Eyes -------------------------------------------------------------------------------------------164Dr. Rahul Bahekar, Dr. Sayan Das, Dr. Ratish Chandra Paul, Dr. Chirag Dilip Bhatt, Dr. Arindam Deb

OCT Structural Comparison of Incisions Made with Lathe Cut Versus Laser Sharpened 2.2mm Keratomes ------------------------------------------------------------168Dr. Satyajit Sinha, Dr. Pooja Sinha

Sulcoflex IOLs for Residual Refractive Error after Cataract Surgery-------170Dr. Purendra Bhasin, Dr. Prateek Gujar, Dr. Amit Basia

Comparison of Rate of PCO after Cataract Surgery with and without CTR Implantation -------------------------------------------------------------------------------------172Dr. Chaitali Patel, Dr. Pallavi Agrawal, Dr. Naheed Abidi, Dr. Abhinav Loomba, Dr. Aarti Agrawal

A Study to Analyze and Optimize the MICS for Different Cataracts with Microincision IOL Implantation -----------------------------------------------------------175Dr. Arun Kumar G.l.

Precision of A New Intraoperative Alignment Tool for Toric IOL -------------179Dr. Ambika Shetty, Dr. Sri Ganesh, Dr. Sathish Prabhu, Dr. Kalpesh H Jain

Correlation between Patient Satisfaction and Misalignment of Implanted MFIOL with Respect to Visual Axis -----------------------------------------------------181Dr. Aniket Patil, Dr. Sri Ganesh, Dr. Sathish Prabhu, Dr. Kalpesh H. Jain

Study of Modular Transfer Function and Strehl Ratio on Itrace(TM) of Aspheric and Spheric IOLs ------------------------------------------------------------------------------183Dr. Janhvi Vinod Mehta, Dr. Vijay Shetty, Dr. Kotecha Ritesh Rameshchand, Mr. Anirban Paik

CATARACT-IIMorphological Study of Polymethylmethacrylate Intraocular Lens A Scanning Electron Microscopic (SEM) Study --------------------------------------- 187 Dr. Nilutpal Borah, Dr. Sanjoy Buragohain

My New Design in Diffractive Multifocal IOL ---------------------------------------- 191Dr. Ramesh Shah

Unilateral Axial Myopia in Adults following Trauma ----------------------------- 192Dr. Madhu Shekhar, Dr. Haripriya Aravind

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Comparative Evaluation of Peristaltic and Venturi Pump Based Phacoemulsi-fication Systems at High Altitude -------------------------------------------------------- 195Dr. (Brig.) J. K. S. Parihar, Dr. Piyush Chaturvedi, Dr. Shantanu Mukherji, Dr. Jaya Kaushik

Clinical Outcome of Toric IOL Implantation for Correction of Pre-Existing Corneal Astigmatism ------------------------------------------------------------------------ 199Dr. Saket Benurwar, Dr. Dilip Kumar Govinda Kumre, Dr. Madan Ashok Hukumchand, Dr. Mona Deshmukh, Dr. Jayshri Ekhar

A Comparison of Nd-YAG Capsulotomy and Posterior Capsule Polishing in PCO Management ---------------------------------------------------------------------------- 203Dr. Jagdish Dukre, Prof. Kamaljeet Singh, Dr. Mayank Srivastava, Dr. Santosh Kumar

VF-14-QOL Scores, Contrast Sensitivity and Total Post-Op. Spherical Aberration in MFIOL Patients ------------------------------------------------------------ 206Dr. Varun Kharbanda, Dr. Adrian Braganza, Dr. Rohit Shetty, Dr. Mathew Kurian, Dr. Sherine M. D. Souza

CATARACT-IIIOutcome in Patients with High Corneal Astigmatism using Toric Intra Ocular Lens (IOL)---------------------------------------------------------------------------------------- 211Dr. Santosh Krishna, Dr. Sagar Bhargava, Dr. Mona Bhargava

Waterbed of Liquefied Cortical Layer Causing Sudden Visual Decline --- 214Dr. Prathmesh G. Mehta, Dr. Badrinath Talwar

Change in Spherical Aberration Value of Cornea after Cataract Surgery- 218Dr. Shroff Ashok Pranjivandas, Dr. Hardik Shroff, Dr. Dishita Shroff

Comparative Analysis of Optical Versus Immersion Biometry in Silicon Oil Filled Eyes --------------------------------------------------------------------------------------- 222Dr. Neeraj Agrawal, Dr. Vinayak, Dr. Haripriya Aravind, Dr. Puja Bhuwania

Is Retinal Acuity Meter (RAM) A Valuable Predictor of Post-Op Visual Acuity in Cataract Patients ? ----------------------------------------------------------------------- 226Dr. Sunil Brijendra Jain, Dr. Anjum Mazhari, Dr. Balmukund

Correction of Pre-Operative Astigmatism by on-axis Clear Corneal Incision in Phacoemulsification --------------------------------------------------------------------- 228Dr. Rohit Kapoor, Dr. Virendra Kumar Malik, Dr. Malik K.P.S., Dr. Charu Jain

Effect of Phacoemusification Cataract Surgery on Corneal Astigmatic Axis ------------------------------------------------------------------------------------------------------- 232Dr. Rujuta Gore, Dr. Suhas Haldipurkar, Dr. Vijay Shetty, Dr. Maninder Singh Setia, Mr. Anirban Paik

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CATARACT-IVCataract Surgery using Femtosecond Laser - A Safe and Effective Technique --------------------------------------------------------------------------------------- 235Dr. Triveni Grover, Dr. Mahipal S. Sachdev, Dr. Hemlata Gupta

Primary Posterior Capsular Opacification (PPCO)in Indian Rural Population Undergoing Cataract Surgery ------------------------------------------------------------ 237Dr. Rajesh Subhash Joshi

Correlation of Grade of Cataract and Higher Order Aberration [HOA] ---- 241Dr. Kotecha Ritesh Rameshchand, Dr. Vijay Shetty, Dr. Maninder Singh Setia, Dr. Suhas Haldipurkar

25 Gauge Mivs Trocar as a Rescue Measure in Difficult Situations in Phacoemulsification ------------------------------------------------------------------------- 243Dr. Shashi Nath Jha, Dr. Nidhi Panwar, Dr. Neeraj Manchanda

Comparative Evaluation of Suture Assisted and Sutureless Scleral Fixated IOL Implantation ------------------------------------------------------------------------------ 247Dr. Sandeep Bachu, Dr. Saravanan V.R., Dr. Narendran V., Dr. George J. Manayath

Capsular Bag Distension Syndrome Following Implantation of Toric Multifocal IOL - A Case Report ---------------------------------------------------------- 247Dr. Triveni Grover, Dr. Mahipal S. Sachdev, Dr. Hemlata Gupta

Correlation between Clinical Examination and Itrace in Measuring the Axis of Toric Intraocular Lenses --------------------------------------------------------------- 250Dr. Sudeep Das, Dr. Mathew Kurian, Dr. Veena Prabhu, Dr. Somshekar N.

Visual outcome, Efficacy, Rotational Stability of Toric IOLs in Pediatric Cataract Surgery ------------------------------------------------------------------------------ 251Dr. Pandey Suresh Kumar, Dr. Vidushi Sharma

Initial Experience with Femtosecond Laser for Cataract Surgery ---------- 252Dr. Sudhank Bharti

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CATARACT - IChairman: Dr. Mishra R.N. l Co-Chairman: Dr. Ratan Kumar

Convenor: Dr. Satyanarayana Raju G. l Moderator: Dr. Raju V.K.

Femtosecond Laser Assisted Cataract Surgery: Our Initial Experience with 109 EyesDr. Rahul Bahekar, Dr. Sayan Das, Dr. Ratish Chandra Paul, Dr. Chirag Dilip Bhatt, Dr. Arindam Deb

The femtosecond laser (FSL) is useful due to its ultrafast pulses in the range of 10-15 seconds and its decreased energy requirements for tissue destruction, allowing for reduced unintended destruction of surrounding tissues.1,2

The FSL causes tissue disruption with its near-infrared scanning pulse focused to 3 m with an accuracy of 1 m.1 Photodisruption is essentially induced by vaporization of target tissues, which occurs through the following steps: the focused laser energy increases to a level where a plasma is generated; the plasma expands and causes a shock wave, cavitation and bubble formation; and then the bubble expands and collapses, leading to separation of the tissue.1,2 Because FSLs function nearly at an infrared wavelength (1053nm), they are not absorbed by optically clear tissues.3 This makes FSL-assisted surgery amenable to anterior chamber targeting at various depths, as the anterior chamber provides an optically clear tissue space.2 The near-infrared wavelength is not absorbed by the cornea, and the waves are known to dissipate approximately 100 m from the lens tissue target.3

The femtosecond laser can create a capsulorrhexis measuring a desired diameter, well-centred on the visual axis without radial tears, resulting in more reproducible positioning of the IOL. Aside from capsulotomy, the laser can perform a three-dimensional configuration corneal cut; this allows multiplanar self-sealing incisions and precise placement of arcuate incisions, potentially increasing the safety and efficacy of cataract surgery. Photo fragmentation of the nucleus is also feasible without the risk of damaging the posterior capsule.4

MATERIALS AND METHODSA retrospective study of 109 eyes undergoing femtosecond laser assisted cataract surgery with Lensx (Alcon) between October 2012 and April 2013 were included in the study. The cases underwent anterior capsulotomy, lens fragmentation and corneal incisions with the femtosecond laser. The procedure was completed by phacoemulsification and insertion of an intraocular lens.

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Data were collected about patient demographics, preoperative investigations and postoperative follow up.

Every patient had undergone preoperative examination including visual acuity measurement, slit lamp examination including fundus examination, IOP measurement by applanation tonometry. Preoperative investigations included specular microscopy for endothelial cell count, biometry, syringing and corneal topography

Nuclear sclerosis grade was classified on the basis of LOCS III

Intraoperatively, after full dilatation, patien