Five-year outcomes of pars plana vitrectomy for macular edema associated with branch retinal vein occlusion

Figures & data

Table 1 Baseline characteristics of the patients

Characteristics	Values
Sex (male/female)	14/11
Age (years)	66.7±8.8
Occlusion site (major branch/macular branch)	13/12
Type of occlusion (ischemic/nonischemic)	6/19
Estimated elapsed time (months)	6.2±9.2
Best-corrected visual acuity (logMAR)	0.53±0.23
Foveal thickness (µm)	535±222

Note: Values are presented as the mean ± standard deviation.

Abbreviation: logMAR, logarithm of the minimal angle of resolution.

Table 2 Combined procedures with PPV

Procedures	Total
PEA + IOL	22
Intravitreal TA injection	8
Arteriovenous sheathotomy	4
ILM peeling	4
Photocoagulation	5

Abbreviations: PPV, pars plana vitrectomy; PEA + IOL, phacoemulsification and intraocular lens implantation; TA, triamcinolone acetonide; ILM, internal limiting membrane.

Table 3 Intra- and postoperative complications

Complications	Total
Intraoperative complications
Iatrogenic retinal tear	4
Postoperative complications
Rhegmatogenous retinal detachment	1
Elevation of intraocular pressure	4

Table 4 Characteristics of the eyes that required additional treatments

Case	Age (years)	Sex	LogMAR at baseline	LogMAR at 5 years	Additional treatment	Months after PPV
1	72	M	0.52	−0.08	Nd:YAG	14
2	66	M	0.52	0.30	PPV	3
3	74	F	0.30	0.22	IVB	11
4	66	F	0.40	0.40	Grid PC	14
5	58	M	0.40	0.30	STTA	3
					Nd:YAG	38
6	64	M	0.70	0.70	STTA	4
					IVB	22
					Direct PC	48
7	51	F	0.52	−0.08	PEA + IOL	19
					Nd:YAG	53
8	73	F	0.52	0.00	Nd:YAG	29
9	80	M	0.40	0.30	Nd:YAG	41
10	60	M	0.22	0.30	IVB	16

Note: Nd:YAG, Nd:YAG posterior laser capsulotomy.

Abbreviations: logMAR, logarithm of the minimal angle of resolution; PPV, pars plana vitrectomy; M, male; F, female; IVB, intravitreal injection of bevacizumab; PC, photocoagulation; STTA, sub-Tenon injection of triamcinolone acetonide; PEA + IOL, phacoemulsification and intraocular lens implantation.

Figure 1 Changes in pre- and postoperative logMAR.

Notes: Error bars indicate standard deviations. *P<0.01 versus baseline. **P<0.0001 versus baseline.
Abbreviation: logMAR, logarithm of the minimal angle of resolution.

Figure 2 Changes in pre- and postoperative foveal thicknesses.

Notes: Error bars indicate standard deviations. *P<0.01 versus baseline. **P<0.001 versus baseline. ***P<0.0001 versus baseline.

Figure 3 Five-year results of visual acuity (A, C, E) and foveal thickness (B, D, F) with or without simultaneously performed procedures such as intravitreal injection of TA (A, B), arteriovenous sheathotomy (C, D), or internal limiting membrane peeling (E, F).

Notes: Error bars indicate standard deviations. *P=0.008.
Abbreviations: TA, triamcinolone acetonide; logMAR, logarithm of the minimal angle of resolution.

Figure S1 Changes in pre- and postoperative logMAR of the patients who withdrew before the 5-year follow-up visit.

Abbreviation: logMAR, logarithm of the minimal angle of resolution.