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

Mertens EL - Clin Ophthalmol (2011)

Bottom Line: More than 60% of the eyes gained ≥1 line of BCVA (17 eyes, safety index of 1.14).For J(0) and J(45), 97.7% and 83.7% were within ±0.50 D, respectively.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.

View Article: PubMed Central - PubMed

Affiliation: Medipolis Eye Centre, Antwerp, Belgium.

ABSTRACT

Purpose: 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 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 (r(2) = 0.99) and astigmatic components: J(0) (r(2) = 0.99) and J(45) (r(2) = 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 J(0) and J(45), 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.

No MeSH data available.


Related in: MedlinePlus

Plots of achieved against attempted correction (predictability) of spherical equivalent (M) in diopters (D) and the astigmatic components (J0 and J45) 12 months after toric implantable collamer lens implantation. Coefficients of determination (r2) are 0.99, 0.99, and 0.90 for M, J0, and J45, respectively.
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f3-opth-5-369: Plots of achieved against attempted correction (predictability) of spherical equivalent (M) in diopters (D) and the astigmatic components (J0 and J45) 12 months after toric implantable collamer lens implantation. Coefficients of determination (r2) are 0.99, 0.99, and 0.90 for M, J0, and J45, respectively.

Mentions: In relation to predictability, Figure 2 shows the distribution of manifest refractive cylinder before toric ICL implantation compared with the 12-month visit outcomes. At the 12-month follow-up visit, 43 (100%) of eyes with the toric ICL had ≤2.0 D of cylinder, compared with 17 (39.5%) preoperatively, with 39 (90.7%) eyes having a refractive cylinder ≤1.0 D. Furthermore, no eyes (0.0%) preoperatively had refractive cylinder of 0.50 D, whereas 36 eyes (83.7%) had ≤0.5 D and 35 (81.4%) had ≤0.25 D of refractive cylinder at 12 months. The deviation of the achieved from the expected M refraction was calculated (see Figure 3). At 12 months, the mean M was −0.17 ± 0.40 D with 33 (76.7%) of the eyes within ±0.50 D and 42 (97.7%) were within ±1.00 D of the desired M refraction (r2 = 0.99). For the astigmatic components, 42 eyes (97.7%) and 36 (83.7%) of eyes were within ± 0.50 D for J0 (r2 = 0.99) and J45 (r2 = 0.90), respectively.


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

Mertens EL - Clin Ophthalmol (2011)

Plots of achieved against attempted correction (predictability) of spherical equivalent (M) in diopters (D) and the astigmatic components (J0 and J45) 12 months after toric implantable collamer lens implantation. Coefficients of determination (r2) are 0.99, 0.99, and 0.90 for M, J0, and J45, respectively.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3065582&req=5

f3-opth-5-369: Plots of achieved against attempted correction (predictability) of spherical equivalent (M) in diopters (D) and the astigmatic components (J0 and J45) 12 months after toric implantable collamer lens implantation. Coefficients of determination (r2) are 0.99, 0.99, and 0.90 for M, J0, and J45, respectively.
Mentions: In relation to predictability, Figure 2 shows the distribution of manifest refractive cylinder before toric ICL implantation compared with the 12-month visit outcomes. At the 12-month follow-up visit, 43 (100%) of eyes with the toric ICL had ≤2.0 D of cylinder, compared with 17 (39.5%) preoperatively, with 39 (90.7%) eyes having a refractive cylinder ≤1.0 D. Furthermore, no eyes (0.0%) preoperatively had refractive cylinder of 0.50 D, whereas 36 eyes (83.7%) had ≤0.5 D and 35 (81.4%) had ≤0.25 D of refractive cylinder at 12 months. The deviation of the achieved from the expected M refraction was calculated (see Figure 3). At 12 months, the mean M was −0.17 ± 0.40 D with 33 (76.7%) of the eyes within ±0.50 D and 42 (97.7%) were within ±1.00 D of the desired M refraction (r2 = 0.99). For the astigmatic components, 42 eyes (97.7%) and 36 (83.7%) of eyes were within ± 0.50 D for J0 (r2 = 0.99) and J45 (r2 = 0.90), respectively.

Bottom Line: More than 60% of the eyes gained ≥1 line of BCVA (17 eyes, safety index of 1.14).For J(0) and J(45), 97.7% and 83.7% were within ±0.50 D, respectively.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.

View Article: PubMed Central - PubMed

Affiliation: Medipolis Eye Centre, Antwerp, Belgium.

ABSTRACT

Purpose: 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 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 (r(2) = 0.99) and astigmatic components: J(0) (r(2) = 0.99) and J(45) (r(2) = 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 J(0) and J(45), 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.

No MeSH data available.


Related in: MedlinePlus