RESUMO
Six patients developed a mild retinopathy after radiation therapy for intracranial lesions. The retinopathy, consisting of capillary microaneurysms, cotton-wool patches, and telangiectasis, developed after a latent period that varied between nine months and three years. The visual acuity remained within normal limits. The severity of the retinopathy is related to the retinal or optic nerve dose of radiation.
Assuntos
Radioterapia/efeitos adversos , Doenças Retinianas/etiologia , Adulto , Aneurisma/etiologia , Astrocitoma/radioterapia , Neoplasias Encefálicas/radioterapia , Capilares , Cordoma/radioterapia , Humanos , Masculino , Neoplasias Hipofisárias/radioterapia , Dosagem Radioterapêutica , Sela Túrcica , Neoplasias Cranianas/radioterapia , Telangiectasia/etiologia , Lobo Temporal , Acuidade VisualRESUMO
Sixty-three patients with confirmed intracranial chordoma were studied retrospectively to determine the incidence of various presenting symptoms and signs. Most of the ocular signs were due to cranial nerve involvement. Sixth cranial nerve palsy occurred as the sole presenting sign in 29% of patients, whereas extraocular muscle palsies of various combinations were present in 62%. Visual field defects were demonstrated in 24% of patients, but only 19% had papilledema or optic atrophy. The chordomas arose from the clivus in 92% of patients, but different patterns of cranial nerve involvement occurred which correlated with the different sites of extension of the tumor.
Assuntos
Neoplasias Encefálicas/complicações , Cordoma/complicações , Oftalmopatias/etiologia , Nervo Abducente , Adolescente , Adulto , Idoso , Neoplasias Encefálicas/patologia , Criança , Cordoma/patologia , Doenças dos Nervos Cranianos/etiologia , Diplopia/etiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Atrofia Óptica/etiologia , Papiledema/etiologia , Paralisia/etiologia , Estudos Retrospectivos , Transtornos da Visão/etiologia , Acuidade Visual , Campos VisuaisRESUMO
Seventy-six patients undergoing cataract extraction and intraocular lens implantation were examined prospectively to evaluate the accuracy of a photogrammetric method for estimating postoperative anterior chamber depth and the predictive value of preoperative anterior chamber depth on postoperative anterior chamber depth. The photogrammetric method was less accurate than the use of a fixed figure determined by the average measured postoperative anterior chamber depth. Measuring the anterior chamber depth preoperatively had even less predictive value.