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Posterior chamber phakic intraocular lens (PCP IOL) implantation is an emerging refractive procedure. We report a case of cataract formation 6 months after uneventful implantation of a Staar PCP IOL to correct high myopia. Visual recovery was achieved after explantation of the phakic IOL and phacoemulsification with implantation of a foldable IOL through the same unenlarged self-sealing corneal incision.

The Miyake-Apple technique for posterior photography and video analysis of postmortem eyes and its variations provide a unique view of the anterior segment structures and surgical manipulations that are not readily seen during surgical procedures or by clinical inspection. It is particularly useful in studying and teaching anterior segment surgery, especially cataract and intraocular lens (IOL) surgery. We summarize the peer-reviewed literature on the use of this technique (1) in experimental studies with fresh human or animal eyes to analyze new IOLs and surgical techniques, (2) in formalin-fixed human pseudophakic autopsy eyes to study IOL-related complications, and (3) for teaching and training purposes.

Purpose To evaluate the rotational stability of the Acrysof Toric intraocular lens (IOL) after experimental eye trauma. Methods Two human cadaver eyes were prepared in accordance with the Miyake-Apple technique, with closed-system modification. After phacoemulsification, an Acrysof Toric IOL was implanted in the capsular bag. Experimental traumatisation of the globe was achieved by pressing against the eye wall using a cotton tip or a fingertip, whereas the IOL was observed from the posterior view. Digital photographs of the eye before and after the procedures were overlaid to detect and measure rotation of the IOL. Results The IOL rotated 5.801 when the traumatic procedures did not cause important leakage from the incision. When the traumatic procedures caused important leakage from the incision and anterior chamber collapse, the IOL rotated 41.001. Conclusion Ocular trauma can cause rotation of the Acrysof Toric IOL. In the event of an eye trauma with no or insignificant leakage from the incision, the IOL rotates less than when the trauma causes significant leakage from the incision.

Presbyopia is one of the earliest universal signs of aging and the basic pathophysiology involved in its development has been a matter of controversy for centuries. This article discusses many aspects of presbyopia by reviewing the literature on the multitude of age-related changes that occur in the eye. Fisiologia da acomodação e presbiopia

RESUMOEste artigo apresenta o processo de conversão do conhecimento em uma empresa de pequeno porte localizada em Belo Horizonte (MG) -estudo de caso em uma escola de atendimento especializado -, utilizando-se do referencial teórico dos quatro processos de conversão do conhecimento (NONAKA e TAKEUCHI, 1997). PALAVRAS-CHAVE:Gestão do Conhecimento. Conhecimento Tácito. Conhecimento Explícito. Conversão do Conhecimento. INTRODUÇÃOA Gestão do Conhecimento nas organizações tem sido considerada um dos principais objetos de investigação, principalmente nos últimos 10 anos, e muito tem sido publicado, descoberto e analisado sobre o tema 1 . A importância dos aspectos relativos à criação, compartilhamento e utilização do conhecimento nas organizações é inquestionável, principalmente no atual contexto econômico-político-social -de globalização, intensa concorrência, desenvolvimento tecnológico -, que tem exigido, cada vez mais das empresas, um olhar cuidadoso sobre seus "ativos intangíveis" (STEWART, 1998

A 38-year-old woman had posterior chamber phakic intraocular lens (IOL) implantation as a secondary refractive procedure to correct residual refraction (20/50 with -16.50 -1.50 x 80) in May 1998, 3 years after intrastromal corneal ring segment surgery for high myopia (-30.00 diopters). Ultrasound biomicroscopy revealed an oversized lens, leading to malpositioning. Moreover, the patient remained undercorrected (20/40 with -5.25 -0.75 x 120). Ten months later, the phakic IOL was uneventfully exchanged for a shorter one with the correct dioptric power. It was well placed in the posterior chamber. The patient's visual acuity was 20/30 with -2.25 -0.75 x 145, very close to the refraction in the fellow aphakic eye (20/30 with -2.50 -0.75 x 75). Patient satisfaction with the final visual outcome was high. Accurate ciliary sulcus measurement is critical for proper phakic IOL sizing.

Destaca a influência dos fatores cognitivos, emocionais e situacionais no comportamento informacional de gerentes. Foi proposto modelo baseado na abordagem perceptiva, estado anômalo de conhecimento, sense-making, busca de informação construtivista e uso da informação de valor agregado. Foi realizado estudo qualitativo junto a seis gerentes, de três organizações de grande porte de Belo Horizonte, através do método de entrevista da 'linha do tempo'. Os resultados confirmaram a aplicabilidade do modelo e da metodologia adotados, confirmando todas as suas etapas.