FEMTOSECOND LASER CATARACT SURGERY IN OPTOMETRY.pptx

Femtosecond laser cataract surgery

1. FEMTOSECOND LASER CATARACT SURGERY By Omenyi Gloria & Ejikeobi nmesoma chukwu

2. INTRODUCTION Femtosecond is the SI unit of time equal to 10 of a second. A femtosecond laser refers to a laser with pulse duration within the femtosecond range. A single femtosecond laser pulse is used to ablate eye tissue to achieve enhanced precision and minimize collateral tissue effects during regular femtosecond laser eye surgery.

3. INTRODUCTION Femtosecond laser assisted cataract surgery (FLACS), is a recent development in the history of cataract surgery. It replaces many of the steps during cataract surgery that requires a blade and softens the cataract, allowing for an easier and smoother removal.

4. HISTORY The femtosecond laser assisted cataract surgery was originally developed between 1995 and 1997 by Dr. K urtz at the University of Michigan. It was first put in use by cataract surgeons around 2008, today there are several FDA approved systems that provide laser assisted cataract surgery.

5. COMMERCIALLY AVAILABLE LASER SYSTEM At present, four femtosecond laser systems are commercially available for cataract surgery. These are; LenSx Catalys precision laser system VICTUS LensAR

6. FEMTOSECOND LASER:USES IN CATARACT SURGERY Anterior capsulotomy: it is simply the removal of the anterior lens capsule. This process using the femtosecond laser is a safe one because in previous method employed, there is a high prevalence of anterior capsule tear. Lens fragmentation: femtosecond laser systems pre-treat the lens by using the fragmentation patterns to segment the nucleus and soften hard cataracts which can reduce the amount of ultrasonic energy from the phacoemulsification probe.

7. Corneal incisions: Here, the corneal incision can be designed to construct reproducible and stable incisions so that the incision width and length may be customized with a high degree of integrity. Limbal relaxing incisions: The lasers can produce very accurate corneal relaxing incisions which in turn help in the treatment of pre-existing astigmatism and now counteract surgery induced astigmatism in a more reliable way.

8. STEPS IN FEMTOSECOND LASER ASSISTED CATARACT SURGERY Planning Engagement Visualization and customization Treatment

9. BENEFITS Precise femtosecond-assisted arcuate keratotomy incisions Lower cumulated phacoemulsification time and endothelial cell loss Perfect centeration of capsulotomy Lens nucleus fragmentation even in eyes with hard cataracts

10. DRAWBACKS The major disadvantage of femtosecond laser assisted cataract surgery are; High cost of the laser Disposables for surgery Specific intraoperative capsular complications A s well as the risk of intra operative miosis and the learning curve

11. COMPLICATIONS Suction break Pupillary constriction Incomplete capsulorhexis and anterior capsule tear Wrong corneal incision localization Posterior capsular rupture Endothelial damage

12. FUTURE SCOPE IN FEMTOSECOND LASER CATARACT SURGERY Another innovation push is necessary to bring this technology to its full potential. Among the many benefits that have not yet been fully explored are: Primary posterior capsulotomy The use of the femtosecond laser in pediatric cataract patients

13. CONCLUSION Femtosecond laser system have successfully entered the cataract surgery market as a promising new technological advance, which plays a role in cataract surgery where it automates the three main surgical steps : corneal incision, capsulotomy and lens fragmentation. In just few years femtosecond lasers have become relevant in cataract surgery in clinic as an opportunity to improve the quality of surgical procedure

14. Thank you