We report on a 55-year-old patient presenting with a 400 μm macular hole which failed to resolve with vitrectomy and internal limited membrane peeling. In accordance with patient wishes to avoid further surgery, subthreshold laser was applied to the macular hole followed by gas exchange with euvolemic C3F8. Successful hole closure was subsequently observed with vision improved by four Snellen lines. Subthreshold laser has several advantages over conventional laser techniques, including reduced collateral thermal damage to the adjacent cells. This case has demonstrated a new use for subthreshold laser, which combined with push-pull technique may be an effective treatment option for persistent MH.
Micromodification in bulk undoped polymethylmethacrylate (PMMA) by single focused (numerical aperture (NA) = 0.25), 1030-nm 250-fs laser pump pulses was explored by pump self-transmittance; optical, 3D-scanning confocal photoluminescence (PL); Raman micro-spectroscopy; and optical polarimetric and interferometric microscopy. Starting from the threshold pulse energy = 0.
The aim of this article is to comprehensively review the multimodal imaging (MMI) features that define perifoveal vascular anomalous complex (PVAC) and to update the optimal treatment strategies for this disorder with a focus also on the underlying pathogenetic mechanisms. This systematic review was performed based on a search of the PubMed and Embase databases of relevant papers on the subject of PVAC. PVAC is characterized by well-defined MMI findings, including remarkable morphological features with optical coherence tomography (OCT) and OCT angiography (OCTA).
Purpose: Assess the effectiveness of a subthreshold micropulse laser for treating a patient with polypoidal choroidal vasculopathy and subretinal fluid.
Observations: A 55-year-old female presented with left eye blurring vision and metamorphopsia, and her visual acuity was 20/60. Optical coherence tomography (OCT) and OCT angiography showed subretinal fluid and pigmented epithelium detachment with a small polyp under the retinal pigmented epithelium, which was diagnosed as polypoidal choroidal vasculopathy.
Purpose: To evaluate the treatment outcomes of subthreshold micropulse laser (SMPL) with a wavelength of 670 nm (red) for treatment-naïve diabetic macular edema (DME).
Methods: A retrospective observational study which included 42 eyes in 34 patients diagnosed with treatment-naïve DME was conducted. Twenty-one eyes underwent red SMPL and the other 21 eyes underwent intravitreal injection of aflibercept (IVA) as initial treatment and were followed up for 12 months.
Purpose: To assess the safe, lowest effective laser power of subthreshold micropulse laser (SML) for treating acute and chronic central serous chorioretinopathy (CSC) in Chinese patients.
Methods: Patients were distinguished with acute or chronic CSC based on focal or diffuse retinal pigment epithelium (RPE) leakage on fundus fluorescein angiography (FFA), with or without widespread RPE decompensation. Patients were categorized into five groups and treated with 577 nm yellow SML according to 50% titration power.
