Changes of macular vessel density and thickness in gas and silicone oil tamponades after vitrectomy for macula-on rhegmatogenous retinal detachment

Table 4 Comparison of vessel density and retinal thickness between both eyes in patients experienced with or without intraocular pressure elevation after silicone oil tamponade

SO tamponade	Patients with IOP elevation			Patients without IOP elevation
SO tamponade	Affected eye	Healthy eye	P (Paired-t)	Affected eye	Healthy eye	P (Paired-t)
logMAR BCVA at follow up, Snellen equivalent	0.48 ± 0.26	0.01 ± 0.06	0.001	0.50 ± 0.33	0.04 ± 0.05	0.005
FAZ, mm²	0.221 ± 0.090	0.347 ± 0.100	0.052	0.319 ± 0.111	0.331 ± 0.077	0.757
Parafoveal VD of SVC (%)	38.69 ± 3.19	46.26 ± 2.32	< 0.001	39.91 ± 4.01	44.55 ± 5.48	0.079
Parafoveal VD of DVC (%)	50.10 ± 4.80	51.76 ± 4.95	0.482	52.34 ± 5.43	51.36 ± 3.31	0.716
Full retinal thickness, μm	290.33 ± 26.95	316.22 ± 13.08	0.022	305.63 ± 29.53	305.13 ± 40.24	0.976
Inner retinal thickness, μm	106.89 ± 13.66	128.89 ± 13.31	0.013	112.50 ± 19.02	127.88 ± 7.70	0.025
Outer retinal thickness, μm	183.33 ± 15.94	191.33 ± 8.82	0.286	192.88 ± 13.12	189.63 ± 4.34	0.555

SO Silicone oil, IOP Intraocular pressure, logMAR Logarithm of the minimum angle of resolution, BCVA Best corrected visual acuity, VD Vessel density, SVC Superior vascular complex, DVC Deep vascular complex

ISSN: 1471-2415