rotational phoria
Introduction
Introduction to Rotational Concealment The cyclophoria is the tendency of the cornea at one or two eyes to be biased to the nasal side or the temporal side at one or two eyes. Most of the normal eye position can be maintained by the balance of the superior and inferior oblique muscles, but the patient may be over-stressed by the oblique muscles. Causes eye muscle fatigue. The rotation slant includes the outer rotation slant and the inner rotation slant. Patients with occult oblique symptoms often have symptoms such as headache, eye pain and nausea. Rotational slanting is the tendency of the cornea of one or two eyes to be biased to the nasal side or the temporal side at 12 o'clock. Most of the normal eye position can be maintained by the balance of the superior and inferior oblique muscles, but the patient may cause eye muscles due to excessive tension of the oblique muscles. fatigue. The prevention of the disease is mainly the law of life, thinking not to be overly nervous, not smoking, alcohol, tea, etc., to enhance physical fitness, to relieve ideological concerns, to treat irregular menstruation and other diseases, especially for young women or mentally vulnerable patients, It can often receive good results. basic knowledge The proportion of illness: 0.001% Susceptible people: no specific population Mode of infection: non-infectious Complications: headache
Cause
Rotational occult cause
1. Insufficient function of the superior oblique muscle or excessive function of the inferior oblique muscle can cause external rotation and oblique inclination. The function of the superior oblique muscle is too strong or the function of the inferior oblique muscle is insufficient, which can cause internal rotation and oblique inclination.
2. When the oblique axis astigmatism looks at the horizontal and vertical lines, a tilt corresponding to the slope of the astigmatism axis may occur, causing the eyeball to rotate. If the force of the lower oblique muscle cannot overcome the tilt of the retinal image caused by the oblique astigmatism, Optical rotation can be produced.
Prevention
Rotational slant prevention
The law of life, do not be overly nervous, do not smoke, alcohol, tea, etc., enhance physical fitness, relieve ideological concerns, treat irregular menstruation and other diseases, especially for young women or mentally vulnerable patients, often receive good results. .
Complication
Rotational sinus complications Complications
Frequent headaches, general malaise and other complications.
Symptom
Rotational slanting symptoms common symptoms eye pain nausea
Patients with occult oblique symptoms often have symptoms such as headache, eye pain and nausea. Rotational slanting is the tendency of the cornea of one or two eyes to be biased to the nasal side or the temporal side at 12 o'clock. Most of the normal eye position can be maintained by the balance of the superior and inferior oblique muscles, but the patient may cause eye muscles due to excessive tension of the oblique muscles. fatigue.
Examine
Rotational tilt check
The most convenient way to check the rotation stealth is the Maddox double prism method. The Maddox double prism is composed of two 4 prisms. The bottoms are joined together, that is, two bottom-to-bottom prisms. The prism is placed vertically when inspecting. At a glance, the line of the double-triangular bottom passes through the center of the pupil, and the eye produces a vertical double vision. Then the patient's eyes are gaze at a horizontal line, and the three horizontal lines can be seen. The eye without the prism is checked. The eye, the horizontal line it sees is located in the middle of the two horizontal lines seen by the triangular prism. If the three lines are completely parallel, it proves that there is no rotation hidden; the horizontal line in the middle of the third period is not the upper and lower horizontal lines. Parallel, it is proved that there is a rotation slanting, if the nasal side of the middle horizontal line is low or the sacral side is high, the object is like an internal rotation, like the internal rotation is the external rotation of the eye position, which proves that the eye is external rotation. On the contrary, it is the internal rotation slanting. This method is a qualitative inspection method. If it is to be used for quantitative inspection, it can be quantitatively checked on the basis of this method, in addition to further rotating the trial frame. Maddox double prism on the top, to the place See that the three straight lines are completely parallel, the arc that is rotated at this time is the angle of the rotating oblique position. The occlusion caused by the anatomical and optical factors is better by this method, but the tilting degree caused by the adjustment factor cannot be measured. The accommodative rotational slanting is different in the rotation of the patient when looking far and close. In patients with ametropia, it is directly reflected in the change of the astigmatic axis. Sometimes, the axial direction can be 10 degrees, and the general optometry is seen. All of them are covered and the monocular refractive state is measured. However, when the eyes are seen together, the astigmatism axis of the patient with accommodative rotational slanting may not be the same as that of the single eye, and there are few common public phenomena. The change can be asymmetrical, the eye with a large degree of astigmatism may change much. Even some patients have an astigmatism of only +0.5-+0.75D, there will be obvious symptoms. Check this kind of regulatory rotatory slant, use cross cylindrical method When the monocular refraction is measured, the eyes are released, and the +1.5D lens is added to the corrective lens in front of the eye to make it look foggy, but it does not affect the retina of both eyes and simultaneously receives the stimulation. At this time, the cross cylindrical mirror is used for re-measurement. Non-fog The astigmatism axis is compared with the measurement result when the single eye is far away. If the distance is measured, the +4.0D lens should be added. The dynamic retinoscopy without dilation is closer to the astigmatism axis when the astigmatism is closer. Because it is still using adjustments, it is more convenient to determine the paralytic slanting slanting machine.
In addition, it is convenient to use the dual Maddox rod method to quantify the rotation deflection, that is, the red Maddox rod is placed in front of the eye, and the triangular prism is placed in front of the bottom (if there is no vertical deflection), the patient can see red and white. If the strips are horizontal, if they are not parallel, the rotation is skewed, and then the Maddox rod on the inclined side of the bright line is rotated until the two lines are completely parallel. The direction and degree of rotation are the rotation deflection. Direction and degree.
Diagnosis
Rotational oblique diagnosis
diagnosis
Diagnosis can be performed based on clinical performance and laboratory tests.
Differential diagnosis
It is distinguished from the oblique oblique and the implicit oblique phase.
