Solar retinopathy-correlation between adaptive optics and spectral domain optical coherence tomography with visual acuity.

Background: To study the characteristics of photoreceptors on adaptive optics (AO) in patients of solar retinopathy and its correlation to changes in spectral domain optical coherence tomography (SDOCT) and visual acuity.

Methods And Material: This is a cross-sectional observational study of six eyes of five patients with clinically diagnosed solar retinopathy. Five age-matched controls were included for comparison.

Quantitative evaluation of optical coherence tomography angiography images of diabetic retinopathy eyes before and after removal of projection artifacts.

Projection artifacts (PAs) affect the quantification of vascular parameters in the deep layer optical coherence tomography (OCT) angiography image. This study eliminated PA and quantified its effect on imaging. 53 eyes (30 subjects) of normal Indian subjects and 113 eyes (92 patients) of type 2 diabetes mellitus with retinopathy (DR) underwent imaging with a scan area of 3 mm × 3 mm.

An automated framework to quantify areas of regional ischemia in retinal vascular diseases with OCT angiography.

In this observational and cross-sectional study, capillary nonperfusion (CNP) and vascular changes in branch retinal vein occlusion (BRVO, sample size [n] = 26) and choroidal neovascularization (CNV, n = 29) were evaluated. Subjects underwent imaging using Optical coherence tomography angiography (Angiovue OCTA, RTVue XR, Optovue Inc., Fremont, California).

Linking Retinal Microvasculature Features With Severity of Diabetic Retinopathy Using Optical Coherence Tomography Angiography.

Purpose: To correlate retinal vascular features with severity and systemic indicators of diabetic retinopathy (DR) using optical coherence tomography angiography (OCTA).

Methods: A total of 209 eyes of 122 type 2 diabetes mellitus patients with DR and 60 eyes of 31 normal Indian subjects underwent OCTA imaging. The diabetic retinopathy patients were graded as having either nonproliferative diabetic retinopathy (NPDR: mild, moderate, and severe NPDR using Early Treatment Diabetic Retinopathy Study classification) or proliferative diabetic retinopathy (PDR).

Characteristics and quantification of vascular changes in macular telangiectasia type 2 on optical coherence tomography angiography.

Background: Macular telangiectasia type 2 (MacTel 2) is a bilateral idiopathic, rare neurodegenerative disease with alterations in the macular capillary network leading to vision loss and is the most common of three subtypes. Optical coherence tomography angiography (OCTA) is a non-invasive imaging modality which helps understand the complex pathological changes, and images the blood vessels across different layers based on their flow characteristics.

Methods: A cross-sectional study was conducted on 56 eyes of Asian Indian eyes of 28 consecutive patients with MacTel 2 studied during a 3-month period in a tertiary eye care hospital of South India.

Quantification of Vessel Density in Retinal Optical Coherence Tomography Angiography Images Using Local Fractal Dimension.

Purpose: To evaluate a fully automated local fractal dimension method to quantify vessel density and foveal avascular zone (FAZ) area in optical coherence tomography angiography (OCTA) images.

Methods: Fifty-two healthy Asian Indian eyes underwent imaging prospectively with OCTA system. Superficial and deep retinal vascular plexus was imaged.

Spontaneous Closure of a Full-Thickness Stage 2 Idiopathic Macular Hole without Posterior Vitreous Detachment.

Objective: We report a 50-year-old female patient with a stage 2 idiopathic macular hole that closed spontaneously.

Method: The case is presented on the basis of an observational case report.

Results: The stage 2 idiopathic macular hole closed spontaneously in 6 weeks with a lamellar defect in the outer retina due to the formation of the bridging retinal tissue, but without any evidence of the common mechanisms of spontaneous closure such as posterior vitreous detachment or epiretinal membrane formation.

Surgical management of optic disc pit maculopathy with outer retinal hole.

Objective: To report the successful outcome of a rare optic pit-associated maculopathy with an outer retinal hole following 23 G vitrectomy, internal limiting membrane (ILM) peeling and fluid-gas exchange without additional endolaser.

Method: Interventional case report.

Results: This case report documents a 56-year-old male patient with complaints of progressive diminution of vision in the right eye more than in the left eye due to an optic disc pit with an outer retinal hole and a cataract.