On eye-strain

Eye Strain

He says : With the parts thus rendered specially receptive to infective germs there is little difficulty in understanding that inflammations should ensue, and thus we find that blepharitis, corneal ulcers, phlyctsenulse, iritis, cyclitis, and glaucoma may have eye strain as one of the predisposing causes. There is also little doubt that cataract may be started by the irregular contraction of th...

Eye Strain and Convergence

Eye strain from convergence insufficiency.

Eye strain and headache are common ocular symptoms, and the main cause in persons aged 15 to 40 is convergence insufficiency. It is more common in females than in males. Many patients are supplied with glasses for eye strain without the causative convergence insufficiency being treated. The treatment in most cases is orthoptic exercises.

An eye on eye development

The vertebrate eye is composed of both surface ectodermal and neuroectodermal derivatives that evaginate laterally from an epithelial anlage of the forming diencephalon. The retina is composed of a limited number of neuronal and non-neuronal cell types and is seen as a model for the brain with reduced complexity. The eye develops in a stereotypic manner building on evolutionarily conserved mole...

Discussion on the Symptomatology and Causes of So-Called Eye-Strain

" weak eyes," or that his complaint is simply " old age " or " eyestrain," he will, as a rule, be more impressed by your acumen than r ^ if you attempt to enlighten him with any scientific details of the causes of his symptoms. Almost every day one meets with the remark, " I am quite prepared to hear you say it is old age," or, " If you tell me it is just old age I shall be satisfied." This is ...