PhNR amplitude is significantly reduced in eyes with open-angle glaucoma, AION, and compressive optic neuropathy. Experiments in primates indicate that this reduction reflects loss of a spike-driven contribution to the photopic ERG. There also are small spike-driven contributions to the a-wave elicited by full-field red stimuli. The i-wave, which becomes more prominent when the PhNR is reduced, has origins in the off-pathway distal to the ganglion cells.

Idiopathic intracranial hypertension (IIH) is a syndrome of increased intracranial pressure without hydrocephalus or mass lesion with elevated cerebrospinal fluid (CSF) pressure but otherwise normal CSF composition. It has been found that pregnancy occurs in IIH patients at about the same rate as in the general population, that IIH can occur in any trimester of pregnancy, that patients have the same spontaneous abortion rate as the general population, and that the visual outcome is the same as for nonpregnant patients with IIH. Although it is also stated that pregnant patients with IIH should be managed and treated the same way as any other patient with IIH, the use of imaging and drug contraindications do make a difference between the two groups. The treatment has two major goals, which are to preserve vision and to improve symptoms. The medical therapy includes weight control, nonketotic diet, serial lumbar punctures, diuretics, steroids, and certain analgesics. When medical therapy fails, surgical procedures should be considered. The two main procedures are optic nerve sheath fenestration and lumboperitoneal shunt. Anesthetic considerations in the pregnant patient are an additional factor when surgeries are contemplated. It is also noted that therapeutic abortion to limit progression of disease is not indicated and that subsequent pregnancies do not increase the risk of recurrence.

ObjectiveTo measure the implementation of WHO Framework Convention on Tobacco Control (FCTC) Article 5.3 at country level using a new Tobacco Industry Interference Index and to report initial results using this index in seven Southeast Asian countries.MethodsScore sheet based on WHO FCTC Article 5.3 Guidelines sent to correspondents in seven Southeast Asian countries, using a scoring system designed with the help of tobacco control experts and validated through focused group discussions.ResultsThe seven countries ranked from the lowest level of interference to the highest are Brunei, Thailand, Lao PDR, Cambodia, Philippines, Malaysia and Indonesia. Countries that face high levels of unnecessary interaction with the tobacco industry also face high levels of tobacco industry influence in policy development. Most governments do not allow any tobacco industry representatives on their delegation to sessions of the Conference of the Parties or its subsidiary bodies nor accept their sponsorship for delegates, but most governments still accept or endorse offers of assistance from the tobacco industry in implementing tobacco control policies. Most governments also receive tobacco industry contributions (monetary or in kind) or endorse industry corporate social responsibility activities. Governments do not have a procedure for disclosing interactions with the tobacco industry, but Lao PDR, Philippines and Thailand have instituted measures to prevent or reduce industry interference.ConclusionsThis Tobacco Industry Interference Index, based on the WHO FCTC Article 5.3 Guidelines, is a useful advocacy tool for identifying both progress and gaps in national efforts at implementing WHO FCTC Article 5.3.

Tobacco industry strategy and excise tax structure drove the price level and variation of cigarettes sold in packs, while currency denominations influence the selling price of single sticks. To maximise the effectiveness of tobacco tax policies, countries should adopt specific excise tax structures to decrease cigarette price variation, which would minimise opportunities for smokers to 'trade down' to a cheaper brand to avoid a tax-driven price increase.

No abstract

For many decades, the international tobacco industry has set its sights on Asia, due to the large population numbers, the high prevalence of male smokers who might shift to its brands, and the extremely low number of female smokers who could possibly be induced into starting smoking. Because of US trade threats against several Asian countries in the 1980s, Asia became quickly aware that tobacco control involved politics, legislation, economics and trade. Several Asian jurisdictions pioneered tobacco control measures, and the Western Pacific is still the only WHO region where all countries have ratified the WHO Framework Convention on Tobacco Control (FCTC). Progress needs to be accelerated to reduce the still high male smoking prevalence and maintain the low female prevalence by fully implementing the WHO FCTC as part of achieving sustainable development, even while grappling with the looming epidemic of new products, holding the companies accountable, and protecting tobacco control policies against constant industry interference.

Progressive outer retinal necrosis is a necrotizing herpetic retinopathy usually seen in immunocompromised patients. The authors describe two patients with this disease who initially had findings suggestive of an optic neuropathy. Vision declined after treatment with methylprednisolone, after which fundus examination became consistent with progressive outer retinal necrosis. These cases underscore the importance of careful examination of the retinal periphery before management of any presumed optic neuropathy with steroids.

BackgroundTobacco control policy audacity can make radical ideas seem possible, and set in motion a ‘domino’ effect, where precedents in one jurisdiction are followed by others. This review examines tobacco control policy audacity from seven countries to identify and compare factors that facilitated it.MethodsA targeted search strategy and purposive sampling approach was used to identify information from a range of sources and analyse key supportive factors for policy audacity. Each case was summarised, then key themes identified and compared across jurisdictions to identify similarities and differences.ResultsIncluded cases were Mauritius’ ban on tobacco industry corporate social responsibility, Uruguay’s tobacco single brand presentation regulations, New Zealand’s Smokefree Aotearoa 2025 Action Plan proposals and 2010 parliamentary Māori Affairs Select Committee Inquiry into the Tobacco Industry, Australia’s plain packaging legislation, Balanga City’s (Philippines) tobacco-free generation ordinance, Beverly Hills City Council’s (USA) ordinance to ban tobacco sales and the Netherlands’ policy plan to phase out online and supermarket tobacco sales. Each case was one strategy within a well-established comprehensive tobacco control and public health approach. Intersectoral and multijurisdiction collaboration, community engagement and public support, a strong theoretical evidence base and lessons learnt from previous tobacco control policies were important supportive factors, as was public support to ensure low political risk for policy makers.ConclusionsTobacco control policy audacity is usually an extension of existing measures and typically appears as ‘the next logical step’ and therefore within the risk appetite of policy makers in settings where it occurs.