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Optical quality of toric intraocular lens implantation in cataract surgery

Identifieur interne : 000688 ( Main/Merge ); précédent : 000687; suivant : 000689

Optical quality of toric intraocular lens implantation in cataract surgery

Auteurs : Xian-Wen Xiao [République populaire de Chine] ; Jing Hao [République populaire de Chine] ; Hong Zhang [République populaire de Chine] ; Fang Tian [République populaire de Chine]

Source :

International Journal of Ophthalmology [ 2222-3959 ] ; 2015.

RBID : PMC:4325244

Abstract

AIM

To analyze the optical quality after implantation of toric intraocular lens with optical quality analysis system.

METHODS

Fifty-two eyes of forty-four patients with regular corneal astigmatism of at least 1.00 D underwent implantation of AcrySof toric intraocular lens, including T3 group 19 eyes, T4 group 18 eyes, T5 group 10 eyes, T6 group 5 eyes. Main outcomes evaluated at 3mo of follow-up, included uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), residual refractive cylinder and intraocular lens (IOL) axis rotation. Objective optical quality were measured using optical quality analysis system (OQAS II^®, Visiometrics, Spain), included the cutoff frequency of modulation transfer function (MTFcutoff), objective scattering index (OSI), Strehl ratio, optical quality analysis system value (OV) 100%, OV 20% and OV 9% [the optical quality analysis system (OQAS) values at contrasts of 100%, 20%, and 9%].

RESULTS

At 3mo postoperative, the mean UDVA and CDVA was 0.18±0.11 and 0.07±0.08 logMAR; the mean residual refractive cylinder was 0.50±0.29 D; the mean toric IOL axis rotation was 3.62±1.76 degrees, the mean MTFcutoff, OSI, Strehl ratio, OV 100%, OV 20% and OV 9% were 22.862±5.584, 1.80±0.84, 0.155±0.038, 0.76±0.18, 0.77±0.19 and 0.78±0.21. The values of UDVA, CDVA, IOL axis rotation, MTFcutoff, OSI, Strehl ratio, OV100%, OV20% and OV9% depending on the power of the cylinder of the implantation were not significantly different (P>0.05), except the residual refractive cylinder (P<0.05).

CONCLUSION

The optical quality analysis system was useful for characterizing the optical quality of AcrySof toric IOL implantation. Implantation of an AcrySof toric IOL is an effective and safe method to correct corneal astigmatism during cataract surgery.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4325244

DOI: 10.3980/j.issn.2222-3959.2015.01.12
PubMed: 25709910
PubMed Central: 4325244

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PMC:4325244

Le document en format XML

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<author><name sortKey="Xiao, Xian Wen" sort="Xiao, Xian Wen" uniqKey="Xiao X" first="Xian-Wen" last="Xiao">Xian-Wen Xiao</name>
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<author><name sortKey="Hao, Jing" sort="Hao, Jing" uniqKey="Hao J" first="Jing" last="Hao">Jing Hao</name>
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<country xml:lang="fr">République populaire de Chine</country>
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<author><name sortKey="Hao, Jing" sort="Hao, Jing" uniqKey="Hao J" first="Jing" last="Hao">Jing Hao</name>
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<series><title level="j">International Journal of Ophthalmology</title>
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<front><div type="abstract" xml:lang="en"><sec><title>AIM</title>
<p>To analyze the optical quality after implantation of toric intraocular lens with optical quality analysis system.</p>
</sec>
<sec><title>METHODS</title>
<p>Fifty-two eyes of forty-four patients with regular corneal astigmatism of at least 1.00 D underwent implantation of AcrySof toric intraocular lens, including T3 group 19 eyes, T4 group 18 eyes, T5 group 10 eyes, T6 group 5 eyes. Main outcomes evaluated at 3mo of follow-up, included uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), residual refractive cylinder and intraocular lens (IOL) axis rotation. Objective optical quality were measured using optical quality analysis system (OQAS II<sup>®</sup>
, Visiometrics, Spain), included the cutoff frequency of modulation transfer function (MTFcutoff), objective scattering index (OSI), Strehl ratio, optical quality analysis system value (OV) 100%, OV 20% and OV 9% [the optical quality analysis system (OQAS) values at contrasts of 100%, 20%, and 9%].</p>
</sec>
<sec><title>RESULTS</title>
<p>At 3mo postoperative, the mean UDVA and CDVA was 0.18±0.11 and 0.07±0.08 logMAR; the mean residual refractive cylinder was 0.50±0.29 D; the mean toric IOL axis rotation was 3.62±1.76 degrees, the mean MTFcutoff, OSI, Strehl ratio, OV 100%, OV 20% and OV 9% were 22.862±5.584, 1.80±0.84, 0.155±0.038, 0.76±0.18, 0.77±0.19 and 0.78±0.21. The values of UDVA, CDVA, IOL axis rotation, MTFcutoff, OSI, Strehl ratio, OV100%, OV20% and OV9% depending on the power of the cylinder of the implantation were not significantly different (<italic>P</italic>
>0.05), except the residual refractive cylinder (<italic>P</italic>
<0.05).</p>
</sec>
<sec><title>CONCLUSION</title>
<p>The optical quality analysis system was useful for characterizing the optical quality of AcrySof toric IOL implantation. Implantation of an AcrySof toric IOL is an effective and safe method to correct corneal astigmatism during cataract surgery.</p>
</sec>
</div>
</front>
</TEI>
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Optical quality of toric intraocular lens implantation in cataract surgery

Optical quality of toric intraocular lens implantation in cataract surgery

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Abstract

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