Ophthalmology Conditions

Ophthalmology Conditions 100% Correct Review Test A+ Open-angle glaucoma - ANS-The angle where the iris meets the cornea is as wide and open as it should be. Also called primary or chronic glaucoma. Angle-closure glaucoma - ANS-A result of the angle between the iris and cornea closing. Glaucoma - ANS-A group of eye conditions that lead to damage to the optic nerve head with progressive loss of retinal ganglion cells and their axons. This leads to a progressive loss of visual field. Open-angle glaucoma causes - ANS-Caused by the gradual increase in resistance of the trabecular meshwork, resulting in the build of of pressure within the eye. This chronic degenerative obstruction occurs painlessly Angle-closure glaucoma causes - ANS-Caused by inflammation of the eye such as uveitis. Iris bulges forward and seals off the trabecular meshwork, preventing aqueous humour drainage, resulting in a sudden rise in IOP. Ophthalmic emergency COAG Signs and Symptoms 1. Symptoms 2. Signs (5) - ANS-Symptom: Asymptomatic until advanced with marked optic disc cupping and extensive visual loss. Signs: 1. Usually but not always raised IOP 2. Normal open angle 3. Progressive thinning of the optic disc 4. Cup-disc ratio increases 5. Defects in the visual field AACG Signs and Symptoms 1. Symptoms 2. Signs (6) - ANS-Symptoms: Sudden onset headache with painful red eye, nausea, vomiting, halos around lights and decreased vision Signs: 1. Reduced visual acuity 2. Mid-dilated fixed pupil on the affected eye 3. Hazy view of the iris and pupil in the affected eye from a cloudy swollen cornea 4. Red eye 5. Rapidly raised IOP 6. Closed angle CONTINUES...