Toric IOL positioning with a no-touch head-up display axis alignment.
Int Ophthalmol
; 40(3): 617-626, 2020 Mar.
Article
en En
| MEDLINE
| ID: mdl-31760544
ABSTRACT
PURPOSE:
To compare a new no-touch alignment technique for toric intraocular lenses (IOL) with the conventional technique that uses a manual pendulum.METHODS:
In this retrospective case-control study, patients who underwent toric IOL implantation using two different alignment techniques (digital Callisto® system vs. manual-pendulum-based marking) were compared in a vector analysis using the Alpins method and an analysis of variance regarding corrected and uncorrected visual acuity and the deviation of the achieved IOL axis from the targeted axis.RESULTS:
Sixty-one eyes were included into analysis. Thirty-six of these surgeries were performed via the Callisto® system and 25 eyes via pendulum-based corneal markings. Median IOL axis misalignment was 3° in both groups. Median uncorrected distance visual acuity was 0.097 logMAR versus 0.200. Median best-corrected visual acuity was 0.000 logMAR versus 0.097. All these data were below the range of statistical significance (p > 0.05). Vector analysis showed no significant difference for TIA [median of 3.14 diopters (D) vs. 2.73 D], SIA (median of 3.82 D vs. 3.79 D), DV (1.18 D vs. 1.08 D), and CI (1.23 vs. 1.29). Median angle of error was 1.96° versus - 0.44° (p > 0.05).CONCLUSIONS:
We found no significant difference in the refractive results, the IOL positioning, and the best-corrected and uncorrected distance visual acuity between the two compared methods. Nevertheless, the Callisto® IOL alignment system delivers a standardized and easy-to-use technology. In particular, less-experienced surgeons might benefit from this marking technique.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Astigmatismo
/
Agudeza Visual
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Implantación de Lentes Intraoculares
/
Lentes Intraoculares
Tipo de estudio:
Observational_studies
Límite:
Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Int Ophthalmol
Año:
2020
Tipo del documento:
Article
País de afiliación:
Alemania