![]() ![]() Follicles may be present on the palpebral conjunctiva. The infection usually begins with one eye, but may spread easily to the other.Īfter an incubation period of about 5 to 12 days, conjunctival hyperemia, watery discharge, and ocular irritation usually begin in one eye and spread rapidly to the other. Its symptoms include excessive watering and itching. Viral conjunctivitis is often associated with an infection of the upper respiratory tract, a common cold, and/or a sore throat. Patients can feel like they can see better closer later on in the disease and this is called second sight. This increase in pressure can damage the optic disc where axons are passing from retinal ganglion cells through the optic nerve to the brainstem. This condition usually results from increased resistance to outflow of the aqueous humour via the scleral venous sinus (canal of Schlemm). ![]() On the inside of the canal, nearest to the aqueous humor, it is covered by the trabecular meshwork this region makes the greatest contribution to outflow resistance of the aqueous humor.Īn increase in ocular pressure above normal can lead to glaucoma. The canal is essentially an endothelium-lined tube, resembling that of a lymphatic vessel. Aqueous humour is continuously produced by the ciliary process of the ciliary body and fills the anterior chamber. Schlemm's canal is a circular lymphatic-like vessel in the eye that collects aqueous humor from the anterior chamber and delivers it into the episcleral blood vessels via aqueous veins. ![]()
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