Removing the Cataractous Lens with Ultrasonic Phacoemulsification
Placeholder: the clouded lens is emulsified and removed through a small incision.
- ~2.2 mm: Incision size (Placeholder value)
- ~10 min: Procedure time (Placeholder value)
- Variable: Ultrasound energy (Placeholder value)
- Preserved: Capsular bag (Placeholder value)
Lens fragmentation and aspiration
Placeholder: phaco probe fragments the lens nucleus for safe aspiration.
Marking the Steep Corneal Meridian Before Implantation
Placeholder: preoperative markings define the target toric axis.
- Ink / digital: Marking method (Placeholder value)
- Limbal marks: Reference points (Placeholder value)
- Accounted for: Cyclotorsion check (Placeholder value)
- Upright, preop: Timing (Placeholder value)
Reference axis determination
Placeholder: the steep meridian is identified from preop keratometry/topography.
Rotating the Toric IOL into Precise Axis Alignment
Placeholder: lens axis markers are rotated to match the target meridian.
- <5° off-axis: Tolerance goal (Placeholder value)
- ~3.3% loss: Effect per degree (Placeholder value)
- Toric markers: Alignment aid (Placeholder value)
- Before check: Viscoelastic removal (Placeholder value)
Fine rotational adjustment
Placeholder: surgeon rotates the lens haptics until axis marks align.
Correcting Cataract and Astigmatism in One Procedure
Placeholder: spherical and cylindrical correction delivered simultaneously.
- IOL power: Sphere correction (Placeholder value)
- Toric power: Cylinder correction (Placeholder value)
- Single surgery: Combined benefit (Placeholder value)
- Near plano: Target refraction (Placeholder value)
Simultaneous power correction
Placeholder: toric IOL power neutralizes preop astigmatism at implantation.
Long-Term Rotational Stability and Visual Outcome
Placeholder: lens settles and outcome is assessed postoperatively.
- First weeks: Stability window (Placeholder value)
- Low if secure: Rotation risk (Placeholder value)
- Refraction/axis: Follow-up check (Placeholder value)
- Reduced: Spectacle need (Placeholder value)
Postoperative assessment
Placeholder: axis stability and residual astigmatism are verified.
Placeholder: accurate alignment maximizes spectacle independence.