RESUMO
Crystalline lens thickness was measured with a Haag-Streit slitlamp biomicroscope no. 900 using a depth measuring attachment. Results indicate that relative lens thickness increases as a square function of age. Lens thickness was also measured during changes in the stimulus to accommodation. As expected, relative lens thickness increased with accommodation.
Assuntos
Biometria/métodos , Cristalino/anatomia & histologia , Acomodação Ocular , Adolescente , Adulto , Fatores Etários , Idoso , Biometria/instrumentação , Criança , Pré-Escolar , Humanos , Lactente , Recém-Nascido , Microscopia/instrumentação , Microscopia/métodos , Pessoa de Meia-IdadeAssuntos
Ambliopia/terapia , Estrabismo/terapia , Pré-Escolar , Humanos , Masculino , Acuidade VisualRESUMO
Contrast thresholds of varying spatial frequencies were obtained on 3 amblyopic patients before and after the CAM treatment of amblyopia. Results of this study confirm previous findings that in the absence of change of visual acuity, contrast sensitivity function can be changed with the use of this technique. Improvement of contrast sensitivity can occur in older patients and that the sensitivity sometimes can deteriorate when treatment is stopped.
Assuntos
Ambliopia/terapia , Ortóptica , Acuidade Visual , Ambliopia/fisiopatologia , Humanos , Projetos PilotoRESUMO
One hundred convergence insufficiency patients who did not meet Sheard's criterion at near were given a program of in-office and at-home training. The objective was to see if they would meet Sheard's criterion after training. Results were analyzed in terms of the numbers successfully meeting this criterion as well as other criteria, i.e. Percival's, elimination of symptoms, improvement of stereopsis, and elimination of fixation disparity. Of the 100 patients, 84 successfully met Sheard's criterion after therapy. Failure to meet Sheard's criterion correlated well with having subjective symptoms.
Assuntos
Acomodação Ocular , Ortóptica/métodos , Transtornos da Visão/terapia , Adolescente , Adulto , Criança , Percepção de Profundidade , Feminino , Humanos , Masculino , Transtornos da Visão/diagnósticoRESUMO
Campbell and Hess developed a new technique for treating amblyopia. This technique involves stimulation of the amblyopic eye for precise time intervals with a graded series of contrast frequency gratings. Partial occlusion is used only during the treatment. Treating strabismic and anisometropic amblyopes by the Campbell-Hess amblyopia training technique produced an improvement of two lines on the acuity chart in six of 14 patients.
