Characterisation of Intraocular Lens Injectors

Area of Science:

• Ophthalmology
• Surgical Technology
• Medical Devices

Background:

• Intraocular lens (IOL) implantation is a standard procedure in ophthalmic surgery.
• Various IOL injector systems exist, ranging from manual to preloaded designs.
• Technological advancements have led to diverse injector characteristics and functionalities.

Purpose of the Study:

• To provide an overview of IOL injector characteristics.
• To highlight potential complications associated with IOL implantation using different injector types.
• To inform manufacturers and surgeons on improving device design and surgical safety.

Main Methods:

• Review of available IOL injector models.
• Classification of injectors based on preoperative preparation (manual vs. preloaded).
• Categorization by implantation mechanism (push-type, screw-type, automated), nozzle tip size, insertion depth control, and reusability.

Main Results:

• Injectors differ in preparation, mechanism, nozzle size, depth control, and reusability.
• Potential complications include IOL misconfigurations (e.g., haptic-optic adhesion, plunger adherence) and IOL damage.
• Injector nozzle damage (scratches, cracks, bursts) can also occur during implantation.

Conclusions:

• While complications are rare and seldom have long-term effects, continuous improvement of injector devices is recommended.
• Manufacturers should focus on preventing IOL and injector damage through enhanced designs.
• Surgeons must carefully evaluate new injectors to ensure optimal surgical safety and outcomes.