The bright light is shone into eyes leads. The patient is asked to look into the distance by examiner. Swinging flashlight test for constricted pupils is performed in dim room light.There are few methods examiners can use to diagnose myosis and those are:
Pupillary assessment is the best and the easiest way to determine abnormal pupillary miosis. It is also important to know that miosis can happen in one or both eyes. Size of miotic pupils or pinpoint pupils is 2 millimeters or less, the problem is more obvious if the environment is dark. Normal pupil size in bright light situations is between 2 and 4 millimeters, but in low light situations pupil size is from 4 to 8 millimeters. Abnormal miosis happens when pupils stay constricted even in low light situations. This is a normal function of the pupils and they are doing it thousands of time a day. But when eyes need more light and to prevent eye strain, pupils are dilating or getting bigger. In order to protect eye from too much light your pupils are constricting or getting smaller. When the environment is bright your pupils are small, and when the environment is dark your pupils are large. The size of the eye pupil is controlled by sphincter muscle of the iris and the iris dilator muscle. Its function is to control how much light gets in your eye. The pupil is the black circle in the center of the eye. Miotic pupils are symptom of brain hemorrhage.
Pupillary miosis due to organophosphate poisoning.Horner’s syndrome can cause unilateral miosis.Constricted pupils induced by drugs or medications.
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