J Korean Ophthalmol Soc.  2013 Jul;54(7):1032-1037. 10.3341/jkos.2013.54.7.1032.

The Changes of Anterior Chamber Depth, Axial Length, Refractive Errors after Combined Vitrectomy

• Seo S
• Seong MC
• Lim HW
• Kang MH
• Cho HY

• KMID: 2217412
• DOI: http://doi.org/10.3341/jkos.2013.54.7.1032

Abstract

PURPOSE
To evaluate the changes of anterior chamber depth (ACD), Axial length (AXL) after combined vitrectomy and cataract surgery and to analyze the association with refractive errors.
METHODS
In 22 eyes who underwent combined vitrectomy and cataract surgery (PPV-Phaco group), 20 eyes who underwent vitrectomy-only (PPV-only group) and 28 eyes who underwent uncomplicated cataract surgery (Phaco-only group), ACD and AXL were measured with IOL master (Carl Zeiss Jena, Germany) preoperatively and 3 months postoperatively. We compared the preoperative desired refraction and postoperative 3 months refraction.
RESULTS
ACD were increased in PPV-Phaco group and Phaco-only group (all, p < 0.001) and this change was more prominent in PPV-Phaco group (p = 0.030). In PPV only group, ACD was decreased (p < 0.001). The AXL after surgery was not significant different from the preoperative AXL in PPV-Phaco and PPV only groups (p = 0.612, p = 0.090). But the AXL was decreased in Phaco-only group (p = 0.022). Hyperopic shifting were noticed in PPV-Phaco and phaco-only groups, but myopic shifting was noticed in PPV-only group. However, these changes were not statistically significant (p = 0.292, p = 0.251, p = 0.068).
CONCLUSIONS
ACD was increased after combined vitrectomy and cataract surgery. AXL was not changed. The hyperopic shifting was noticed after combined vitrectomy and cataract surgery, but was not statistically significant.

Keyword

Anterior chamber depth; Axial length; Combined vitrectomy; Refraction

MeSH Terms

Anterior Chamber
Cataract
Eye
Refractive Errors
Vitrectomy

Figure

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  Figure 1. (A) A diagram representing a normal anatomy of the eye. (B) After phacoemulsification, anterior chamber depth deepening effect caused by IOL replacement. (C) After com-bined vitrectomy, anterior chamber depth deepening by IOL replacement and decrease positive vitreous pressure. (D) After vitrectomy, decrease of adherence between zonule and vitre-ous makes zonule loose. Lens moves toward anterior chamber.

Reference

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