Indian Journal of Ophthalmology

LETTER TO THE EDITOR
Year
: 2015  |  Volume : 63  |  Issue : 10  |  Page : 804--805

Pars plana vitrectomy versus three intravitreal injections of bevacizumab for nontractional diabetic macular edema: A prospective, randomized comparative study


Murat Kucukevcilioglu1, Mehmet Talay Koylu2, Onder Ayyildiz1, Gokhan Ozge1,  
1 Department of Ophthalmology, Gulhane Military Medical School, Ankara, Turkey
2 Department of Ophthalmology, Tatvan Military Hospital, Bitlis, Turkey

Correspondence Address:
Dr. Murat Kucukevcilioglu
Department of Ophthalmology, Gulhane Military Medical School, Ankara
Turkey




How to cite this article:
Kucukevcilioglu M, Koylu MT, Ayyildiz O, Ozge G. Pars plana vitrectomy versus three intravitreal injections of bevacizumab for nontractional diabetic macular edema: A prospective, randomized comparative study.Indian J Ophthalmol 2015;63:804-805


How to cite this URL:
Kucukevcilioglu M, Koylu MT, Ayyildiz O, Ozge G. Pars plana vitrectomy versus three intravitreal injections of bevacizumab for nontractional diabetic macular edema: A prospective, randomized comparative study. Indian J Ophthalmol [serial online] 2015 [cited 2024 Mar 29 ];63:804-805
Available from: https://journals.lww.com/ijo/pages/default.aspx/text.asp?2015/63/10/804/171528


Full Text

Dear Sir,

We read with interest the paper "Pars plana vitrectomy versus three intravitreal injections of bevacizumab for nontractional diabetic macular edema (DME). A prospective, randomized comparative study" written by Raizada et al. [1] They found that both 3 monthly injection of bevacizumab and vitrectomy with internal limiting membrane (ILM) peeling is equally effective in vision gain and macular thickness reduction. They did not observe any serious adverse effects in both study arms. Interestingly, they showed that macular thickness reduction is more profound in the vitrectomy group with an earlier maximum visual gain than bevacizumab group. They mentioned that ILM peeling may cause further photoreceptor damage which we think needs further elaboration. Recently, Ripandelli et al. evaluated the functional outcomes of ILM peeling in patients with idiopathic epiretinal membrane in a comparative study and showed that mean retinal sensitivities on microperimetry in 4° and 12° central subfields were significantly lower in ILM peeled group. [2] Moreover, they demonstrated significantly higher number of absolute microscotomas in 12° central subfield during the 12-month follow-up. Romano et al. reported that ILM peeling may cause further damage to Müller cells, and collapse of intraretinal scaffold which can be seen as submacular atrophy in nontractional DME) cases. [3] Yoshikawa et al. investigated topographical changes after ILM peeling in DME patients and showed macular displacement toward the optic disc. [4] This may have some functional implications such as impaired fixation characteristics or stereopsis. All these observations prove that not only distance visual acuity but also other components of the visual function need to be considered.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

References

1Raizada S, Al Kandari J, Al Diab F, Al Sabah K, Kumar N, Mathew S. Pars plana vitrectomy versus three intravitreal injections of bevacizumab for nontractional diabetic macular edema. A prospective, randomized comparative study. Indian J Ophthalmol 2015;63:504-10.
2Ripandelli G, Scarinci F, Piaggi P, Guidi G, Pileri M, Cupo G, et al. Macular pucker: To peel or not to peel the internal limiting membrane? A microperimetric response. Retina 2015;35:498-507.
3Romano MR, Romano V, Vallejo-Garcia JL, Vinciguerra R, Romano M, Cereda M, et al. Macular hypotrophy after internal limiting membrane removal for diabetic macular edema. Retina 2014;34:1182-9.
4Yoshikawa M, Murakami T, Nishijima K, Uji A, Ogino K, Horii T, et al. Macular migration toward the optic disc after inner limiting membrane peeling for diabetic macular edema. Invest Ophthalmol Vis Sci 2013;54:629-35.