Refractive Cataract Surgery With New Multifocal Toric IOL
Narrative Responses:
Purpose
To present clinical data on residual refractive astigmatism and uncorrected visual acuity (UCVA) of the AmoTecnis Multifocal Toric IOL (ZMT) after implantation in cataract surgery.
Setting/venue: Departments of Ophthalmology, St Elisabeth Hospital Tilburg and Phacocentrum, Den Bosch.
Methods
The AmoTecnis Multifocal Toric IOL contains a toric component on the anterior surface of the optic and a diffractive multifocal component on its posterior surface, but is otherwise structurally identical to the AmoTecnis one-piece IOL. An AmoTecnis Multifocal Toric (ZMT150-300) IOL was implanted in 9 eyes of 6 patients. Three toric models were evaluated in cylinder powers of 1.5D (ZMT150 n=5), 2.25D (ZMT225 n=3), 3.0D (ZCT225 n=1), at the IOL plane. Outcome measures included residual refractive astigmatism and uncorrected visual acuity.
Results
At 24-42 days postoperatively, the average refractive cylinder was -0.50 D±0.25, in ZMT150-300 groups combined. (average preoperative refractive cylinder: -1.71 D ±0.46). The average UCVA for the combined group was 0.92 D±0.09. Near vision was reached in similar magnitude for all patients.More information on IOL misalignment and incision-induced corneal cylinder as calculated using a double angle vector method will be presented.
Conclusion
Implantation of the AmoTecnis Multifocal Toric IOL seems to be an effective and safe method for astigmatism correction in cataract patients, and requires only small modifications from a standard phaco-procedure.