PMID- 24736051 OWN - NLM STAT- MEDLINE DCOM- 20140623 LR - 20220317 IS - 1552-5783 (Electronic) IS - 0146-0404 (Linking) VI - 55 IP - 5 DP - 2014 May 8 TI - Preservation of the photoreceptor layer following subthreshold laser treatment for diabetic macular edema as demonstrated by SD-OCT. PG - 3054-9 LID - 10.1167/iovs.13-12607 [doi] AB - PURPOSE: Subthreshold laser treatment of diabetic macular edema (DME) may have less deleterious effects on the photoreceptors than regular continuous wave laser. This study aimed to assess whether subthreshold laser causes a long-term damage to the retinal structures, as demonstrated by spectral-domain optical coherence tomography (SD-OCT), and to evaluate the change in the axial diameter of retinal diabetic microaneurysms following treatment. METHODS: A retrospective study of eyes that were diagnosed with nonfoveal involving DME and underwent subthreshold laser treatment with the Novus SRT system. Spectral-domain OCT scans of treated retinal areas, performed prior to treatment and approximately 4 months following treatment, were assessed for changes in the continuity of the photoreceptor (PR) layer, the thickness of the PR-RPE layer, the retinal thickness at the treatment sites, and the diameter of the microaneurysms. RESULTS: Included in this study were 31 microaneurysms. Following treatment, the continuity of the ellipsoid zone of the inner segments of the photoreceptors was confirmed in all but two cases. The thickness of the PR-RPE layers was 72.32 +/- 7.36 and 70.97 +/- 7.27 mum prior to and following treatment, respectively (P = 0.061). The retinal thickness at the treatment sites decreased from 398.65 +/- 57.89 to 372.74 +/- 60.4 mum (P < 0.001). The mean measured diameter of the microaneurysms was 87.32 +/- 27.45 and 6.68 +/- 26.12 mum, respectively (P < 0.001). CONCLUSIONS: In this study, subthreshold laser treatment for DME has been shown to be a safe technology that preserves the photoreceptor layer, as demonstrated by SD-OCT. FAU - Soiberman, Uri AU - Soiberman U AD - Department of Ophthalmology, Tel Aviv Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. FAU - Goldstein, Michaella AU - Goldstein M FAU - Pianka, Pazit AU - Pianka P FAU - Loewenstein, Anat AU - Loewenstein A FAU - Goldenberg, Dafna AU - Goldenberg D LA - eng PT - Journal Article DEP - 20140508 PL - United States TA - Invest Ophthalmol Vis Sci JT - Investigative ophthalmology & visual science JID - 7703701 SB - IM MH - Aged MH - Aneurysm/pathology MH - Diabetic Retinopathy/pathology/*surgery MH - Female MH - Humans MH - *Laser Coagulation/adverse effects MH - Macular Edema/pathology/*surgery MH - Male MH - Middle Aged MH - Organ Sparing Treatments/methods MH - Photoreceptor Cells, Vertebrate/*pathology MH - Retinal Pigment Epithelium/pathology MH - Retrospective Studies MH - Tomography, Optical Coherence OTO - NOTNLM OT - microaneurysms OT - optical coherence tomography OT - photoreceptors OT - retinal pigment epithelium OT - subthreshold laser treatmsent EDAT- 2014/04/17 06:00 MHDA- 2014/06/24 06:00 CRDT- 2014/04/17 06:00 PHST- 2014/04/17 06:00 [entrez] PHST- 2014/04/17 06:00 [pubmed] PHST- 2014/06/24 06:00 [medline] AID - iovs.13-12607 [pii] AID - 10.1167/iovs.13-12607 [doi] PST - epublish SO - Invest Ophthalmol Vis Sci. 2014 May 8;55(5):3054-9. doi: 10.1167/iovs.13-12607.