OCTA characteristics in non-arteritic central retinal artery occlusion and correlation with visual acuity.

Aim: To observe the retinal and choroidal circulations in patients with non-arteritic permanent central retinal artery occlusion (NA-CRAO) optical coherence tomography angiography (OCTA) and analyze their correlation with visual acuity.

Methods: Sixty-two eyes with clinically confirmed acute NA-CRAO were included in the study and divided into: A type (mild =29), B type (moderate =27) and C type (severe =6) based on the degree of visual loss, retinal edema, and arterial blood flow delay in fundus fluorescence angiography (FFA). Contralateral healthy eyes were used as the control group.

Non-arteritic anterior ischemic optic neuropathy combined with branch retinal vein obstruction: A case report.

Background: Non-arteritic anterior ischemic optic neuropathy (NAION) is an independent disease characterized by edematous optic discs. In eyes with branch retinal vein occlusion (BRVO), the arteries and veins in the ethmoid plate of the optic disc are relatively crowded; however, a combination of the two is clinically uncommon. Herein, we reported a patient with NAION and concealed BRVO, for which the treatment and prognosis were not similar to those for NAION alone.

High-power narrow-linewidth quasi-CW diode-pumped TEM00 1064 nm Nd:YAG ring laser.

We demonstrated a high average power, narrow-linewidth, quasi-CW diode-pumped Nd:YAG 1064 nm laser with near-diffraction-limited beam quality. A symmetrical three-mirror ring cavity with unidirectional operation elements and an etalon was employed to realize the narrow-linewidth laser output. Two highly efficient laser modules and a 90° quartz rotator for birefringence compensation were used for the high output power.

Compact high-efficiency 100-W-level diode-side-pumped Nd:YAG laser with linearly polarized TEM00 mode output.

We present a compact high-efficiency and high-average-power diode-side-pumped Nd:YAG rod laser oscillator operated with a linearly polarized fundamental mode. The oscillator resonator is based on an L-shaped convex-convex cavity with an improved module and a dual-rod configuration for birefringence compensation. Under a pump power of 344 W, a linearly polarized average output power of 101.