Korean J Ophthalmol.  2006 Jun;20(2):87-92. 10.3341/kjo.2006.20.2.87.

Visual Improvement in High Myopic Amblyopic Adult Eyes following Phakic Anterior Chamber Intraocular Lens Implantation

• Kwon SW
• Moon HS
• Shyn KH

• KMID: 1099041
• DOI: http://doi.org/10.3341/kjo.2006.20.2.87

Abstract

PURPOSE: To evaluate the efficacy and safety of angle-supported phakic anterior chamber intraocular lenses in amblyopic adult eyes with very high myopia. METHODS: We evaluated 12 eyes in nine patients with very high myopic amblyopia who received angle-supported phakic intraocular lenses (Phakic 6H(R)) and followed them for more than six months. Uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA), and complications were evaluated. A satisfaction score was rated by patients using a 5-point (1~5) numeric scale. RESULTS: The mean age of patients was 37.3+/-9.4 years, ranging from 29 to 59 years old. The preoperative mean refraction (spherical equivalent, SE) was -20.10+/-5.41 diopters (D). The postoperative mean refraction (SE) was -1.75+/-0.76 D at six months. The postoperative BCVA improved an average 3.92+/-1.24 lines over preoperative values, and mean endothelial cell loss was 8.9% at six months. Development of cataracts, glaucoma, and pupil abnormalities were not demonstrated in any case during the study. The patients were all very satisfied, as the average satisfaction score was 4.3. CONCLUSIONS: This study indicates that angle-supported phakic anterior chamber intraocular lens implantation may be an effective surgical alternative for the correction of amblyopic adult eyes with very high myopia. However, long-term evaluation is necessary to assess possible complications and long-term safety.

Keyword

Amblyopia; High myopia; Phakic anterior chamber lens

MeSH Terms

Visual Acuity/*physiology
Treatment Outcome
Severity of Illness Index
Retrospective Studies
Refraction, Ocular/*physiology
Myopia/complications/physiopathology/*surgery
Middle Aged
Male
Lens Implantation, Intraocular/*methods
Humans
Follow-Up Studies
Female
Anterior Chamber/*surgery
Amblyopia/complications/physiopathology/*surgery
Adult

Figure

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  Fig. 1 Stability of postoperative refraction. Postoperative refraction observed at 1 week remained at 1, 2, 3 and 6 months. (Repeated measures ANOVA within-subjects; p=0.83) SE=spherical equivalent.

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  Fig. 2 Changes in postoperative BCVA at 6 months (12 eyes). MAR: minimum angle of resolution.

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  Fig. 3 Changes in endothelial cell count following phakic anterior chamber IOL implantation.

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  Fig. 4 Subjective six-month postoperative evaluation of quality of vision in patients with phakic anterior chamber IOLs operation.

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