Eyeball (Canada)

Topiramate is a widely prescribed medication for epilepsy, migraine prophylaxis, and weight management, but it can rarely cause acute bilateral angle closure with myopic shift. We describe a healthy 35-year-old woman who developed sudden bilateral painful red eyes, blurred vision, and a myopic shift within one week of initiating topiramate. Examination revealed shallow anterior chambers, elevated intraocular pressure, and iridocorneal touch bilaterally.Prompt discontinuation of topiramate led to full resolution. Laser peripheral iridotomies (LPIs) were performed while the etiology was uncertain, and are not typically required in medication-induced effusion-related angle closure. This case underscores that cycloplegia and drug cessation are the key interventions, while LPI may be performed only when the underlying mechanism is unclear.This case highlights the importance of recognizing medication-induced angle closure and distinguishing it from primary pupillary-block mechanisms to ensure timely, vision-saving management.

Highly efficient and robust source coding, channel coding, and packetization techniques are proposed for video streaming over wireless ATM. At the base station, which is located at the boundary of the wireline and wireless networks, video received from the wireline source is dynamically transformed to match both the hardware capabilities of mobile hosts and the time-varying wireless channel conditions. For wireless transmission, source coding, channel coding, and packetization are jointly implemented as part of the application. For source coding, we propose to use our three-dimensional significance-linked connected component analysis video codec. For channel coding and packetization, both intracell and interlaced (intercell) forward error correction are applied. Furthermore, the time-varying channel characteristics is exploited by adaptively allocating the total bit budget between source coding and channel coding. Extensive performance evaluation demonstrates the effectiveness of the proposed wireless video streaming technique.