Femtosecond Laser Applications in Cataract Surgery
Summary
Femtosecond laser technology has transformed cataract surgery by employing ultrashort pulses of near‐infrared light to execute highly precise corneal and lens incisions. By automating capsulotomy and lens fragmentation, this approach achieves submicrometre accuracy in anterior capsule openings and reduces reliance on ultrasonic energy for phacoemulsification. The result is a more consistent capsulotomy diameter, improved intraocular lens centration and stability, and decreased collateral damage to surrounding tissues. Globally, the adoption of femtosecond platforms has led to enhanced refractive predictability and faster visual recovery, while ongoing innovations aim to broaden access, streamline procedural workflows and integrate advanced imaging modalities for customised treatment plans.
Research from Nature Portfolio
Recent exploration of intraocular pressure dynamics following laser pretreatment has demonstrated a transient but significant rise in intraocular pressure immediately after capsulotomy and lens fragmentation, returning towards baseline within 30 minutes before a secondary elevation at one hour. These findings support the recommendation that phacoemulsification commences within half an hour of laser application to minimise pressure‐related risks. In addition, a foundational meta‐analysis of randomised trials has confirmed that femtosecond laser pretreatment consistently reduces cumulative dissipated energy and effective phacoemulsification time, leading to lower early postoperative corneal thickening and equivalent long‐term endothelial cell counts compared with conventional surgery. Both studies underscore the safety profile and potential to refine clinical protocols for optimal patient outcomes.
Femtosecond Laser Applications in Cataract Surgery publication trend
The graph below shows the total number of articles in femtosecond laser applications in cataract surgery across all publications each year (not limited to Nature Index journals).
Technical terms
Femtosecond laser: A laser emitting pulses of light lasting 10⁻¹⁵ seconds, enabling precision disruption of ocular tissues with minimal collateral damage.
Capsulotomy: The creation of a circular opening in the anterior lens capsule to allow removal of the cloudy lens material and implantation of the intraocular lens.
Lens fragmentation: The process of dividing the cataractous lens into smaller pieces using laser energy to facilitate removal with reduced ultrasonic power.
Phacoemulsification: Ultrasonic emulsification and aspiration of lens fragments during cataract surgery.
Intraocular pressure: The fluid pressure inside the eye, measured in millimetres of mercury (mmHg), which must be managed to avoid optic nerve damage and other complications.
References
- Effects of Different Capsulotomy and Fragmentation Energy Levels on the Generation of Oxidative Stress Following Femtosecond Laser-Assisted Cataract Surgery. Biomolecules (2024).
- Safety and efficacy of cataract surgery performed with a low-energy femtosecond laser compared with conventional phacoemulsification in Chinese patients: a randomized clinical trial. Eye and Vision (2023).
- Intraocular pressure changes before and after a femtosecond laser procedure for cataract surgery. Scientific Reports (2024).
- Efficacy and safety of femtosecond laser-assisted cataract surgery versus conventional phacoemulsification for cataract: a meta-analysis of randomized controlled trials. Scientific Reports (2015).
- Cataract Surgery Performed by High Frequency LDV Z8 Femtosecond Laser: Safety, Efficacy, and Its Physical Properties. Sensors (2017).
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