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Procedures For The Examination Of Ophthalmic Examinations
Sep 15, 2017

Step 1: visual acuity test

The main objective is to look at the visual function of the macula. Most people think that normal vision refers to the visual acuity of 1.5 or 1 can see in the table, but visual acuity is normal or not is the standard: vision correction can reach the standard, namely optometry after sight can reach the standard.

Corrective vision, <0.5, is difficult to drive;

Corrected vision, <0.3, for low vision;

Corrected visual acuity, <0.05, was blind.

In fact, any of these situations is therapeutic, that is to say, patients should go to the eye department.

The second step: examination includes eyelids, eyelashes, conjunctiva, pupil, fundus and intraocular pressure, and so on

These examinations are for doctors only, and the physical examination should follow orders. But if any of the following circumstances, the medical examination should take the initiative to inform the doctor.

The visual impairment: a sudden or gradual decrease of visual acuity or blurred vision, see far (myopia) or near (hyperopia or presbyopia) are not clear; change visual shape, smaller, discoloration, blind, monocular or binocular diplopia; vision narrow, fixed or floating in front of the shadow.

The abnormal sensation: eyes tingling, itching, foreign body sensation or photophobia, tears, these symptoms were referred to as eye irritation, common in keratitis, ocular trauma, acute iritis and glaucoma.

3: including a decreased visual acuity loss of vision, visual acuity within 24 hours (usually 1 hours) to return to normal, common in optic disc edema (seconds, eyes) and transient ischemic attack (minutes, monocular), vertebrobasilar insufficiency (eyes), orthostatic hypotension mental stimulation, amaurosis and central retinal artery spasm, hysteria, fatigue and migraines. The sudden decrease in visual acuity without eye pain is often caused by retinal arteriovenous obstruction, ischemia, optic neuropathy, and retinal detachment. Cataracts, refractive errors, open-angle glaucoma, and chronic retinal diseases also have vision loss and no eye pain symptoms. If the eye pain at the same time, sudden vision loss, common in acute angle closure glaucoma, uveitis, keratitis and other diseases.

The use of many drugs can cause ocular changes, such as long-term use of glucocorticoids, stability, anti tuberculosis drugs, drugs, cardiovascular system and prophylactic antimalarial drugs, so the subjects should be told their doctor medication.

The systemic disease: the eye is part of the body organs, many diseases can cause eye disease. Such as atherosclerosis, hypertension, diabetes, kidney disease, blood diseases, tuberculosis, infective endocarditis, vitamin deficiency, sarcoidosis and so on. Traumatic brain injuries in surgery are the most common diseases that cause eye changes. Other diseases, such as cerebrovascular disease, nervous system disease, demyelinating spinal degenerative diseases, brain tumor, inflammation, mental illness, pregnancy induced hypertension in obstetrics and Gynecology, Department of Stomatology, Department of ENT disease, sexually transmitted diseases, genetic metabolic disease, rheumatic disease, also can cause eye disease.

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