haptic
The supporting arms or loops of an intraocular lens that position and stabilize the lens within the eye. Essential component terminology in lens implantation procedures.
Full Definition
The flexible supporting structures extending from the optic portion of an intraocular lens, designed to center and stabilize the lens within the capsular bag or sulcus. Haptics can be made from various materials including PMMA, acrylic, or silicone, and their design significantly influences lens positioning and long-term stability. Proper haptic positioning is crucial for optimal visual outcomes and prevention of complications such as lens decentration or dislocation. Surgical documentation must specify haptic material, design, and final positioning.
Usage
Usage note: Plural form 'haptics' more commonly used than singular in surgical documentation.
In Context
- "Both haptics were positioned securely within the capsular bag without evidence of asymmetry." — Surgical report
- "The three-piece IOL featured flexible haptics designed for capsular bag placement." — Device specification