Intracorneal implantation of a misdirected foldable intraocular lens during phacoemulsification surgery: a case report / Implantação intracorneana de uma lente intraocular dobrável direcionada incorretamente durante cirurgia de facoemulsificação: relato de caso

ABSTRACT A 59-year-old man presented with a unilateral blurring of vision in his left eye. His left eye's visual acuity was hand movements level. He underwent phacoemulsification surgery, and an intrastromal posterior chamber intraocular lens was implanted. The intrastromal intraocular lens was extracted and a new intraocular lens was implanted. Usinge the Snellen chart, the final best-corrected visual acuity was 20/40. With this case report, we wish to emphasize that a single stepwise clear corneal incision merged with wound-assisted intraocular lens injections can result in intraocular lens misdirection into the corneal stroma. As a result, while performing a misdirected intraocular lens removal, we recommend that the wound be carefully constructed.

RESUMO Um homem de 59 anos apresentou embaçamento visual unilateral no olho esquerdo. Sua acuidade visual nesse olho era no nível de movimentos da mão. O paciente havia se submetido a uma cirurgia de facoemulsificação em que foi feita a implantação intraestromal de uma lente intraocular de câmara posterior. Foi feita a extração dessa lente intraestromal intraocular e uma nova lente intraocular foi implantada. A melhor acuidade visual corrigida final foi de 20/40 pela tabela de Snellen. Com este relato de caso, os autores desejam apontar que uma incisão de degrau único em córnea clara, quando combinada com a injeção de uma lente ocular através da incisão, pode levar a um direcionamento incorreto da lente intraocular para dentro do estroma corneano. Portanto, recomenda-se uma construção cuidadosa da incisão ao se remover uma lente intraocular direcionada incorretamente.

Prevalence of refraction errors and color blindness in heavy vehicle drivers / 国际眼科杂志(Guoji Yanke Zazhi)

AIM:To investigate the frequency of eye disorders in heavy vehicle drivers.METHODS:A cross-sectional type study was conducted between November 2004 and September 2006 in 200 drivers and 200 non-driver persons.A complete ophthalmologic examination was performed,including visual acuity and dilated examination of the posterior segment.We used the auto refractometer for determining refractive errors.RESULTS:According to eye examination results,the prevalence of the refractive errors was 21.5% and 31.3% in study and control groups respectively (P<0.05).The most common type of refraction errors in the study group was myopic astigmatism (8.3%) while in the control group simple myopia(12.8%).Prevalence of dyschromatopsia in the drivers,control group and total group was 2.2%,2 8% and 2.6% respectively.CONCLUSION:A considerably high number of drivers are in lack of optimal visual acuity.Refraction errors in drivers may impair the traffic security.