To report laser pointer induced damage to retina and choroid and briefly review literature. A case report of a 13-year old Caucasian boy developed blurry central vision and central scotoma in right eye (OD). He was exposed for one minute to class IIIA green laser pointer of 650 nm wavelength and 5 mW power. Clinical examination showed a grayish lesion in foveal region. Ancillary testing revealed disruption of the retinal pigment epithelial (RPE) layer in foveal region and indocyanine green angiography demonstrated evidence of choroidal hypofluorescence suggestive of choroidal infarction in OD. Visual acuity improved from 20/100 to 20/60 in one day and he was treated with tapering doses of oral prednisolone (40 mg) for 3 weeks. Laser pointer with a power of >5 mW caused damage to RPE in the macula. Children should not be given laser pointers as toys especially those with label of danger instructions.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1007/s10792-012-9555-z | DOI Listing |
Mikrochim Acta
January 2025
Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Integrated Circuits, Taiyuan University of Technology, Taiyuan, 030024, China.
African swine fever (ASF) is an acute hemorrhagic disease in pigs caused by the African swine fever virus (ASFV), which has a high mortality rate and brought great damage to global pig farming industry. At present, there is no effective treatment or vaccine to combat ASFV infection, so early detection of ASFV has become particularly important. Therefore, the PDMS/chitosan/MPMs composite film was proposed to detect ASFV P72.
View Article and Find Full Text PDFRSC Adv
December 2024
Department of Chemistry, Faculty of Science, Tokyo University of Science 1-3 Kagurazaka Shinjyuku-ku Tokyo 162-8601 Japan
A novel photochromic system was discovered, in which leucomethylene blue, reduced by l-ascorbic acid, was irradiated with 405 nm visible light, resulting in the solution undergoing a colorless-to-blue transition. The process was then repeated, with the solution returning to its colorless state when left undisturbed. This photochromic reaction is sensitive enough to be driven by a blue-violet LED lamp and enables figures to be drawn in solution with a laser pointer.
View Article and Find Full Text PDFElectrophoresis
December 2024
State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an JiaoTong University, Xi'an, People's Republic of China.
On-line counting of the microparticle/bacteria in the liquid medium has great potential in the food safety and biomedical fields. A new low-cost microfluidic device is proposed for the on-line counting of the microparticles/bacteria in the liquid medium. The gradually contracted microchannel and the viscoelastic fluid are combined to achieve the efficient elastic focusing of the particle/bacteria, which significantly improves the counting accuracy by aligning all particles/bacteria in a single position at the center of the microchannel.
View Article and Find Full Text PDFSleep Breath
November 2024
Department of Clinical Neurophysiology and Neurology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey.
Purpose: This study aimed to compare cervical proprioception and related biomechanical factors among patients with Obstructive Sleep Apnea (OSA) and asymptomatic controls.
Methods: In this case-control study, polysomnography scores (apnea-hypopnea index-AHI) were examined to determine the disease severity of the OSA group. Also, we evaluated cervical proprioception by using a laser pointer to detect joint repositioning error sense in cervical rotational movements.
J Bodyw Mov Ther
October 2024
University of Tehran, Faculty of Physical Education and Sport Science, Department of Sport Injury and Corrective Exercise, Tehran, Iran.
Purpose: The presence of spinal arches is crucial for maintaining good body posture, reducing pressure on joints, and preventing deformities caused by misalignment. Engaging in exercises that focus on correcting body alignment, such as walking backward, can enhance posture and various related factors.
Method: A group of 46 female students suffering from forward head posture was selected (age: 22.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!