Journal List > J Korean Ophthalmol Soc > v.56(10) > 1010114

Lee, Kweon, Cho, and Kim: Analysis of Leading Diseases Causing Epiretinal Membrane and Comparison of Prognosis after Epiretinal Membrane Peeling

Abstract

Purpose

In the present study we analyzed the leading diseases causing epiretinal membrane and compared the prognosis after epiretinal membrane peeling.

Methods

We enrolled 158 (160 eyes) patients diagnosed with epiretinal membrane who underwent epiretinal membrane peel-ing from January 2005 to January 2014. The medical records including age, underlying ocular disease, and pre-operative symp-toms of patients from Chonbuk National University Hospital were analyzed retrospectively. Additionally, we evaluated the changes in central macular thickness and visual acuity after the epiretinal membrane peeling.

Results

Idiopathic epiretinal membrane was the most common type of disease (44.4%, 71/160). The causes of secondary epi-retinal membrane were diabetic retinopathy (20.6%, 33/160), retinal tear, and retinal hole (18.1%, 29/160). Other causes were post retinal detachment surgery, traumatic epiretinal membrane, retinal vein occlusion and uveitis; 6.9% (11/160), 4.4% (7/160), 3.8% (6/160), and 1.9% (3/160), respectively. The changes in central macular thickness after surgery did not differ significantly between the idiopathic epiretinal membrane and secondary epiretinal membrane patients after adjusting for age ( p = 0.958, based on analysis of variance (ANOVA). Additionally, the visual acuity did not differ significantly after the surgery even after ad-justing for age ( p = 0.118, analysis of covariance [ANCOVA]).

Conclusions

Various ocular diseases can be the leading causes of epiretinal membrane, but the leading disease does not affect the degree of central macular thickness changes after surgery or change the prognosis of post-surgical visual acuity.

References

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Table 1.
Dermographic features and baseline characteristics
Idiopathic DR Retinal tear Post RRD operation p-value*
Sex
 Male 40 13 17 6
 Female 31 20 10 5
Mean ages (years) 66.7 ± 7.2 60.8 ± 13.1 56.1 ± 12.5 53.8 ± 9.3
N (%) 71 (44.4) 33 (20.6) 29 (18.1) 11 (6.9)
RVO Trauma Uveitis
Sex
 Male 3 4 2
 Female 3 3 1
Mean ages (years) 58.7 ± 16.8 52.8 ± 12.5 66.0 ± 13.1 0.002
N (%) 6 (3.8) 7 (4.4) 3 (1.9) 160 (100)

Values are presented as mean ± SD unless otherwise indicated. DR = diabetic retinopathy; RRD = rhegmatogenous retinal detachment; RVO = retinal vein occlusion.

* Analyzed by ANOVA.

Table 2.
Visual acuity (log MAR) before and after epiretinal membrane peeling (age adjusted)
Idiopathic DR Retinal tear RVO Post RRD operation Trauma p-value*
V.A. before 0.65 ± 0.38 0.78 ± 0.37 0.45 ± 0.28 0.70 ± 0.64 0.78 ± 0.39 0.87 ± 0.56 0.121
V.A. after 0.50 ± 0.37 0.70 ± 0.58 0.35 ± 0.38 0.41 ± 0.40 0.75 ± 0.43 0.51 ± 0.16 0.118

Values are presented as mean ± SD unless otherwise indicated. V.A. = visual acuity; DR = diabetic retinopathy; RVO = retinal vein occlusion; RRD = rhegmatogenous retinal detachment.

* Analyzed by ANCOVA (age adjust).

Table 3.
Central retinal thickness before epiretinal membrane peeling (age adjusted)
Idiopathic DR Retinal tear RVO Post RRD operation Trauma p-value*
CRT (μ m) 475 ± 121 396 ± 117 465 ± 107 409 ± 63 429 ± 99 457 ± 123 0.220

Values are presented as mean ± SD unless otherwise indicated. CRT = central macular thickness; DR = diabetic retinopathy; RVO = retinal vein occlusion; RRD = rhegmatogenous retinal detachment.

* Analyzed by ANCOVA.

Table 4.
Change of central retinal thickness between before ERMP and after ERMP (age adjusted)
Idiopathic DR Retinal tear RVO Post RRD operation Trauma p-value*
CRT change (μ m) 66 ± 16 74 ± 108 94 ± 101 70 ± 61 39 ± 88 56 ± 91 0.958

Values are presented as mean ± SD unless otherwise indicated. ERMP = epiretinal membrane peeling; CRT = central macular thickness; DR = diabetic retinopathy; RVO = retinal vein occlusion; RRD = rhegmatogenous retinal detachment.

* Analyzed by ANCOVA.

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