Diagnosis of strabismus which check to do?

Diagnosis of strabismus often requires the following checks:

First, ask ask the patient's medical history, the exact time of onset, reason or cause, strabismus, do any treatment, is there a family history.

Second, the eyes look check note patients eye bit inclination of direction and extent of blepharophimosis are large, facial symmetry, there is in the air between superflous skin, anatomical anomalies caused by false strabismus, there are no compensatory head position.

Third, vision inspection and refraction detailed checking patients far, near, eyesight and vision correction.

For myopia and astigmatism and adolescent patients, must be 1 per cent of atropine in regulating pupil, expansion of paralysis after refraction.

4. cover the test reviewer and sat, in patients with relative distance of 1/2 m, a width of 5 cm, length 15 cm of cardboard as a cover sheet, check at 33 cm and 5 metres away goals of eye level.

Covered in two ways: one is to check always the eye covered by monocular hiding method, also known as alternate hiding method or continuous hiding method, check the first blind in one eye, and then remove the cover plate of eyes can also forward looking at a target and eye reduction speed, this method can be called out and not from the law. Cover the test you can simple and accurate characterization of strabismus.

5. check the eye movement observation of six major movement direction, to determine each eye muscle function has no exception.

Six, squint angle inspection method squint angle min-bevel (first diagonal angle of view) and Deputy bevel (second diagonal angle of view).

Eye-depending on the angle of deflection squinted its eyes when stroked called the primary bevel; when squinted its eyes when stroked-depending on the angle of the eye deviation is known as the Deputy of the bevel. Measuring primary, Deputy bevel can assist in the diagnosis of strabismus, clinically-used method of measuring the oblique perspective include the following:

(1) corneal reflex point determination can be roughly estimated strabismus.

Check and patients to sit in front of 33 cm patients, a remove the lamp cover flashlight, the lights in patients with corneal surface, note the corneal light point position. If the two eyes location correctly, then light reflection will be located in the center of the cornea eye, Strabismus degrees 0?; as a side-by-point in the central cornea, another side of reflecting light point in favor of the corneal nose side as Exotropia, such as bias corneal temporal as Esotropia. Since the pupil Center to limbal line is divided into three equal division, each about 15?, according to the location of the reflected light point estimated strabismus.

(2) the same as the machine check method to the amount fixed in patients with head, in the adjust level and pupil distance, the two eyes together at the same time perception, Kin-glasses-tube placed in the "0" position, then turn the deflection of glasses, make two eyes pictures overlap, then the index that is mainly a bulging feel inclined angle.

If you turn the switch two barrels of light and movement has to its reflective point is located in the central cornea, eyes do not move when the number of degrees to he felt inclined angle.

(3) Prism with blind laws is a more accurate determination of the pitch.

When the mask eye eyes, squinting eyes will move towards the goal of the eye. If you squint eyes put on increasing the degree of Prism, the eye of reset generation mobile no longer, then moved to eliminate the reduction represents a Prism, the degree to which the eye of strabismus.

In addition, Strabismus meter squint method, check for Markov rod with Prism, perimetry measurement method and so on.

Following the above examination, the diagnostic on strabismus eye can basically set.

(Practice editing: plum and apricot)