How the slit lamp is repaired
1. Changing light source
SOURCE damage: First, according to the specifications required to replace the light source specification. The light source of the instrument is halogen tungsten lamp, but do not think that just changing a new light source can, must be the position of the filament in the center of the Light Road. The test method is: After installing the lamp, the position of the slight movement of the lamp around the situation, look at the cracks, when the cracks like the most evenly lit light, fixed light.
2. Microscope eyepiece Lens Because of the long-term use of the dirt oil stains: Can first use the rubber nozzle blow to dust and then use the lens paper to wipe it clean, if still have oil, can be stained with anhydrous alcohol scrub.
3. The illumination system and the microscopic system different axes: that is, the rotation slit arm or the microscopic arm fissure elephant runs out the microscope vision or cannot be in the View center. In Suzhou, TLX–Ⅱ slit lamp microscope For example, its repair method, plug up the coke rod, found at the top of the 450 mirrors of the lighting system of barrels, the barrel of the outer wall of the lower part of the 4 fastening screws, loosen can gently rotate, rotate the barrel, so that the cracks light in the focus rod Central, then tighten the screws, rotating the slit arm, that is, the visible cracks always appear on the stick in the same position, this is the need for the same axis of Coke.
4. The cracks have burrs or positions not in the center of the circular aperture: the general cracks and the adjustment of the handwheel are fitted together. To exclude these two faults, this part of the whole demolition must be removed, cracks like burrs, generally the cracks on the adhesive tape caused, cleaning to dirty things can. When cleaning dirty things must be careful not to use the lens paper or wool cotton, etc., to use a clean paper or special wipe resin lenses, CD disc mirror cloth to wipe. If the slit is not in the middle of the microscope, it can be accomplished by adjusting and regulating the position of the circular slice with the thickness of the screw on the shaft of the fractured size. When the cracks are formed above or below the microscope, the screws can be adjusted horizontally by adjusting the microscope to render the cracks in the center of the microscope screen.
5. The fracture size cannot be fixed: The fissure is composed of two equal blades, the two blades are fitted with springs, and the effect is to make the two blades closed. The crack size is accomplished by adjusting the circular slice of the preceding clip in the thickness of the slit. The thicker the corresponding thickness, the wider the fissure, that is, in addition to the thinnest place (i.e. when the cracks are closed) the crack-size spiral is always subjected to a rotating force to turn it into a closed fracture. To make the crack size fixed, the factory is generally in the knob inside the wall plus a mat, outside the pressure spring, the mat and the instrument wall friction, to prevent its own rotation. Therefore, the fracture size can not be fixed, as long as the screw pressed in the mat spring can. If this method is not spirit, can remove the knob, change the method of the thick mat mat, to guarantee the gap width fixed.
1. Slanted Law
It is the most commonly used method to take 45 degrees, bit basins, and show a positive observation of the seal. The Slanted method can be used to observe most ocular lesions, such as the proliferation of Conjunctival Papilla, conjunctival follicle, trachoma scar, corneal foreign body, corneal cloud, lens anterior capsule pigment and crystal turbidity. This method is mainly to inspect the color and morphological changes of the eye to judge lesions.
2 Reflective method
When the slit light shines into the eye, the reflection phenomena will occur when the front, rear, front and rear of the lens are smooth. At this time, such as rotating a microscope bracket, so that reflected light into the microscope, with a microscope observation, there will be a very bright reflection. Before and after the mobile display mirrors can see the reflective surface of micro-changes. If the angle of rotation slit lamp and microscope to change the position of irradiation without moving the microscope, it can also achieve the purpose of reflecting light (note: The Mirror must focus on the reflective surface). This method can be used to inspect corneal edema when the surface of “small swelling bubble”, corneal epithelium Peeling, corneal ulcer healing scar, crystal anterior sac wrinkles, product body posterior capsule reflective or color reflective.