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Table 3 Review of studies evaluating anterior chamber changes following pars plana vitrectomy

From: Changes in anterior segment optical coherence tomography following pars plana vitrectomy without tamponade

Author, Year

Design

No. of eyes

Surgery

F/U (m)

Modality of measurement

Anterior chamber parameters

Tuklo, 2020

Prospective case series

88

complete PPV(44) and partial PPV(44)

3

Pentacam

ACD increased significantly in c-PPV but this increase was not significant in the p-PPV group

ICA increased significantly in the c-PPV group but decreased in the p-PPV group

No significant change in AL in each group

Ghomi, 2017

Prospective case series

7

PPV ± tamponade

6

UBM

ACD, CBD, CBW, AC angle did not change

LAP was increased (3.9 vs. 4.1; p = 0.04)

Huang, 2016

Prospective case series

238

PPV + tamponade

12

SD-OCT

AL did not change

ACD was decreased (3.07, 2.97, and 3.02 at preop, 6 months, and 12 months; p < 0.05)

Li, 2013

Prospective case series

29

Isolated PPV

3

A-scan

In PPV for vitreous hemorrhage: no change in ACD occurred

In PPV for ERM: ACD was deeper compared to control eyes at pre-op and 1 week (p < 0.01), but there was no difference at 1 month and 3 months

Calik, 2013

Prospective cohort

44

PPV + SO (22) and PPV (22)

1

Pentacam

ACV and ACA did not change

ACD was decreased in SO group (2.9 vs. 2.4; p < 0.05) while increased in sole PPV group (2.6 vs. 2.7; p < 0.05)

Neudorfer, 2011

Prospective cohort

28

Isolated PPV (13) and PPV + gas (15)

2 days

UBM

LAP did not significantly change

ACD was decreased in gas group (3.1 vs. 2.7; p < 0.01) but not in isolated PPV group

Marigo, 2006

Prospective case series

20

Isolated PPV

3

UBM

ACD, AOD500, TCD, CBT, and SST did not change

  1. ACA anterior chamber angular width, ACD anterior chamber depth, AL axial length, AOD angle opening distance, CBD ciliary body depth, CBW ciliary body width, CBT ciliary body thickness, ICA iridocorneal angle, ERM epiretinal membrane, LAP lens anterior posterior diameter, PPV pars plana vitrectomy, c-PPV complete PPV, p_PPV Partial PPV, SO silicone oil, SST supra ciliary thickness, TCD trabeculocilliary distance, UBM ultrasound biomicroscopy