Korean J Ophthalmol.  2018 Oct;32(5):369-375. 10.3341/kjo.2018.0020.

Effect of Nd:YAG Laser Capsulotomy on Anterior Segment Parameters in Patients with Posterior Capsular Opacification after Phacovitrectomy

• Shin MH
• Kang HJ
• Kim SJ
• Chung IY
• Seo SW
• Yoo JM
• Park JM
• Han YS

• KMID: 2422066
• DOI: http://doi.org/10.3341/kjo.2018.0020

Abstract

PURPOSE
To compare changes in anterior segment parameters after Nd:YAG laser capsulotomy in eyes that underwent either combined phacovitrectomy or cataract surgery.
METHODS
This retrospective study enrolled 37 eyes of 35 patients with posterior capsular opacification treated with combined phacovitrectomy (group A), and 35 eyes of 32 patients with posterior capsular opacification treated with cataract surgery (group B). Anterior segment parameters, including anterior chamber depth (ACD), anterior chamber angle, and anterior chamber volume, were measured by a Pentacam before Nd:YAG laser capsulotomy and 1 hour, 1 day, 1 week, 1 month, and 3 months after this treatment.
RESULTS
In the cataract surgery group, the ACD was significantly lower 1 day (3.75 ± 0.74 mm), 1 week (3.73 ± 0.24 mm), and 3 months (3.74 ± 0.33 mm) after Nd:YAG laser capsulotomy compared with the pretreatment value (4.20 ± 0.62 mm, p = 0.002). By contrast, the ACD did not change significantly over time in the combined phacovitrectomy group. The ACD differed significantly between the two groups at 1 week, 1 month, and 3 months after capsulotomy. There were no significant changes in the anterior chamber volume, anterior chamber angle, central corneal thickness, or pupil size from before to after capsulotomy in either group. A non-significant trend toward myopic shift was observed in group A (p = 0.072) and B (p = 0.055).
CONCLUSIONS
The results of the present study may help determine the power of the intraocular lens in patients who underwent combined surgery or cataract surgery and who will receive Nd:YAG laser capsulotomy.

Keyword

Anterior chamber parameters; Nd:YAG laser posterior capsulotomy; Phacovitrectomy; Posterior capsular opacification

MeSH Terms

Anterior Chamber
Cataract
Humans
Lenses, Intraocular
Pupil
Retrospective Studies

Figure

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  Fig. 1 Change in anterior chamber depth (ACD) after Nd:YAG laser capsulotomy. Group A: combined cataract operation (phacoemulsification with intraocular lens implantation) and vitrectomy. Group B: cataract operation (phacoemulsification with intraocular lens implantation).

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