Epidemiology of Pars Plana Vitrectomy in the Elderly: A Retrospective 10-Year Survey of 592 Cases

Figures & data

Table 1 Distribution of Indications for Pars-Plana Vitrectomy by Age Group

Total	Total	75–84 Years Number of Cases (%)	85 Years and Older Number of Cases (%)	P value
Retinal detachment	117	101 (21)	16 (14)	NS
ERM	111	106 (22)	5 (5)	0.000032
VMT	29	24 (5)	5 (5)	NS
MH	64	59 (12)	5 (5)	0.02
SMH	40	23 (5)	17 (16)	0.0000039
Dropped IOL/retained lens fragments	89	70 (14)	19 (18)	NS
NDVH	30	17 (4)	13 (12)	0.00026
Diabetic vitreous hemorrhage and complications	33	27 (6)	6 (5)	NS
Diagnostic vitrectomy	13	10 (2)	3 (3)	NS
Endophthalmitis	24	17 (4)	7 (7)	NS
Trauma	8	3 (1)	5 (5)	0.001
Other	20	16 (3)	4 (4)	NS
Malignant glaucoma	14	11 (2)	3 (3)	NS
Total	592	484 (82)	108 (18)
Male	328 (55)	268 (55.3)	55 (50.9)	NS

Abbreviations: ERM, epiretinal membrane; VMT, vitreomacular traction; MH, macular hole; SMH, sub-macular hemorrhage; NDVH, nondiabetic vitreous hemorrhage.

Table 2 Distribution of Urgency of Pars-Plana Vitrectomy by Age Group

Age Group (Years)	Urgent Number of Cases (%)	Mid Urgency Number of Cases (%)	Low Urgency Number of Cases (%)	Total Number of Cases (%)
75–84	234 (48.4)	94 (19.4)	156 (32.2)	484 (100)
85 and older	70 (65)	21 (19)	17 (16)	108 (100)

Note: Chi square (3, 2)=11.8856, p=0.002625.

Table 3 Comparison of Vitrectomy Indications During the First and Last Five Years of the Study

	2008–2013 (n=292)	2014–2018 (n=300)	P value
Retinal Detachment	51	63	NS
SMH	33	7	0.000014
ERM/VMT	74	65	NS
Diabetic VH & complications	18	14	NS
Endophthalmitis	8	16	NS

Abbreviations: ERM, epiretinal membrane; VMT, vitreomacular traction; SMH, sub-macular hemorrhage; VH, vitreous hemorrhage.