Reading Ability With New Extended Range of Vision 1-Piece IOL
To evaluate the reading speed and functional intermediate and near visual performance of the new TECNIS Symfony Extended Range of Vision 1-Piece Intraocular Lens (IOL), Model ZXR00 (AMO).
In a prospective, non-randomized, multicenter (EU), open-label clinical study, bilateral implantation of the TECNIS Symfony IOL in 150 patients was evaluated. Healthy patients with cataracts were enrolled after signing Ethics Committee approved ICF. Standard phaco surgery with/without femtosecond laser assistance was performed. Key evaluation criteria were binocular uncorrected/corrected distance visual acuity (VA) and uncorrected intermediate and near VA at one and three months. Reading speed was tested with the Colenbrander Low-Vision Reading Cards at one-month. Complications/adverse events were collected.
One-month results and three-month results of 150 patients will be presented. So far, one-month data of 82 patients are available. The spherical equivalent of all eyes was -0.25±0.5D. Defocus testing revealed a sustained uncorrected VA of ≤0.2 logMAR over more than 2.0D. Uncorrected binocular near VA was 0.18 logMAR, intermediate 0.03 logMAR. Without glasses, intermediate reading speed at print sizes within 25% of maximum speed could be maintained up to 0.2 logMAR. For near, it was 0.4 logMAR. Mean of smallest print size at 80 words/min. was 0.12 logMAR for intermediate, 0.1 logMAR for near ensuring comfortable reading of print sizes used in newspapers/magazines.
The new TECNIS Symfony Extended Range of Vision IOL, Model ZXR00, provides good reading ability of normal print sizes without glasses from intermediate to near with normal reading speed. The extended range of vision allows excellent uncorrected VA for far/intermediate and functional near VA with high levels of spectacle independence.