Toric phakic implantable collamer lens for correction of astigmatism: 1-year outcomes

Toric phakic implantable collamer lens for correction of astigmatism: 1-year outcomes

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Erik L MertensMedipolis Eye Centre, Antwerp, BelgiumPurpose: The purpose of this study was to assess predictability, efficacy, safety and stability in patients who received a toric implantable collamer lens to correct moderate to high myopic astigmatism.Methods: Forty-three eyes of 23 patients underwent implantation of a toric implantable collamer T-Shirt lens (STAAR Surgical Inc) for astigmatism correction.Mean spherical refraction was —4.

98 ± 3.49 diopters (D) (range: 0 to —13 D), and mean cylinder was —2.62 ± 0.

97 D (range: —1.00 to —5.00 D).

Main outcomes measures evaluated during a 12-month follow-up included uncorrected visual acuity (UCVA), refraction, best-corrected visual acuity (BCVA), vault, and adverse events.Results: At 12 months the mean Snellen decimal UCVA was 0.87 ± 0.

27 and mean BCVA was 0.94 ± 0.21, with an efficacy index of 1.

05.More than 60% of the eyes gained ≥1 line of BCVA (17 eyes, safety index of 1.14).

The treatment was highly predictable for spherical equivalent (r2 = 0.99) and astigmatic components: J0 (r2 Mushroom Vapes = 0.99) and J45 (r2 = 0.

90).The mean spherical equivalent dropped from —7.29 ± 3.

4 D to —0.17 ± 0.40 D at 12 months.

Of the attempted spherical equivalent, 76.7% of the eyes were within ±0.50 D and 97.

7% eyes were within ±1.00 D, respectively.For J0 and J45, 97.

7% and 83.7% were within ±0.50 D, respectively.

Conclusion: The results of the present study support the safety, efficacy, and predictability of toric implantable collamer lens implantation to treat moderate to high myopic astigmatism.Keywords: phakic intraocular lens, toric implantable collamer lens, astigmatism.