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[product use] Introduction to routine inspection method of slit lamp

[product use] Introduction to routine inspection method of slit lamp

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  • Time of issue:2021-04-12
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(Summary description)Slit lamp microscope is one of the most commonly used diagnostic instruments in ophthalmology. It is used to examine the eyelid, conjunctiva, sclera, cornea, anterior chamber, iris, lens and anterior vitreous. In addition, some accessories can make a fine examination of the anterior chamber angle, fundus macula and surrounding parts. Because it can make a light section of the eye, it can judge the changes of various levels in the eye, which provides convenience for accurately judging the location of intraocular lesions, which is difficult to be achieved by other instruments.

[product use] Introduction to routine inspection method of slit lamp

(Summary description)Slit lamp microscope is one of the most commonly used diagnostic instruments in ophthalmology. It is used to examine the eyelid, conjunctiva, sclera, cornea, anterior chamber, iris, lens and anterior vitreous. In addition, some accessories can make a fine examination of the anterior chamber angle, fundus macula and surrounding parts. Because it can make a light section of the eye, it can judge the changes of various levels in the eye, which provides convenience for accurately judging the location of intraocular lesions, which is difficult to be achieved by other instruments.

  • Categories:Product Guide
  • Author:
  • Origin:
  • Time of issue:2021-04-12
  • Views:0
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Slit lamp microscope is one of the most commonly used diagnostic instruments in ophthalmology. It is used to examine the eyelid, conjunctiva, sclera, cornea, anterior chamber, iris, lens and anterior vitreous. In addition, some accessories can make a fine examination of the anterior chamber angle, fundus macula and surrounding parts. Because it can make a light section of the eye, it can judge the changes of various levels in the eye, which provides convenience for accurately judging the location of intraocular lesions, which is difficult to be achieved by other instruments.
The basic sequence of slit lamp examination from outside to inside is: eyelid - eyelid margin - Eyelashes - lacrimal apparatus - eyelid conjunctiva - bulbar conjunctiva - conjunctival sac - corneal scleral margin - tear film - cornea - anterior chamber - anterior chamber angle - Iris - pupil - posterior chamber - lens. The order of examination is right eye first and then left eye. During screening, the average examination time of each eye is 120 seconds. If there are specific problems, further examination will be carried out.
The specific inspection methods are described in detail below.
Eyelids:
Operator: 1 Adjust the dispersion sheet of slit lamp into the optical path and check it with astigmatism light;
2. The light intensity of slit lamp is medium;
3. The light source angle is 45 degrees;
4. The magnification of the microscope shall be adjusted to 10 times;
5. Ask the patient to close his eyes during the examination;
6. The inspection time shall be controlled between 5-8 seconds.
Palpebral margin and eyelashes:
Operator: 1 Adjust the dispersion sheet of slit lamp into the optical path and check it with astigmatism light;
2. The light intensity of slit lamp is medium;
3. The light source angle is 45 degrees;
4. The magnification of the microscope shall be adjusted to 10 times;
5. The order of observation is from nasal side to temporal side;
6. Ask the patient to look straight ahead during the examination;
7. The inspection time shall be controlled between 5-8 seconds.
 
Lacrimal apparatus:
Operator: 1 Adjust the dispersion sheet of slit lamp into the optical path and check it with astigmatism light;
2. The light intensity of slit lamp is medium;
3. The angle of light source is temporal 45 °;
4. The magnification of the microscope shall be adjusted to 10 times;
5. Ask the patient to look at the temporal side during the examination;
6. The patient's upper and lower lacrimal puncta should be observed;
7. The inspection time shall be controlled between 4-8 seconds.
Tear film:
Operator: 1 Adjust the dispersion sheet of slit lamp into the optical path and check it with astigmatism light;
2. The light intensity of slit lamp is medium;
3. The angle of light source is temporal 45 °;
4. The magnification of the microscope shall be adjusted to 10 times;
5. Ask the patient to look forward;
6. Observe whether the tear film of the patient is complete and the tear film rupture time.
7. The inspection time shall be controlled between 8-18 seconds.
Note: observe the tear film rupture time: ask the patient to blink hard once and start counting until the tear film rupture or blink again.
Conjunctiva:
Operator: 1 During the examination, first adjust the slit lamp to astigmatism to see the overall situation of the eyelid conjunctiva, and then adjust the slit lamp to slit light to conduct a detailed examination once or twice from the patient's nasal side to the temporal side (the eyelid conjunctiva can be seen only by turning over the upper eyelid);
2. The light intensity of slit lamp is medium;
3. The light source angle is 45 degrees;
4. The magnification of the microscope shall be adjusted to 10x-16x;
5. When checking the upper eyelid conjunctiva, ask the patient to look down and check the lower eyelid conjunctiva
Ask the patient to look up when using the membrane;
6. When turning the eyelids, pay attention to the manipulation, such as congestion, nipples or
Follicles should be observed at magnification;
7. The inspection time shall be controlled between 8-14 seconds.
 
 
Corneal:
Operator: 1 Adjust the slit lamp to slit light during inspection;
2. Adjust the brightness of slit lamp to medium;
3. Adjust the angle and width of the slit lamp light source. The inspection sequence is from the nasal side to the temporal side of the patient, and the basic thickness of the cornea is observed from the corneal epithelium;
4. The inspection time shall be controlled between 10-20 seconds;
5. Ask the patient to blink from time to time during the examination to observe the patient's tear film.
 
Iris and pupil:
Operator: 1 Focusing the slit light on the iris;
2. First select astigmatism to observe the overall condition of iris, and then narrow the crack to observe the specific details;
2. Adjust the intensity of the fissure and observe the reaction of the pupil under light;
3. The light source angle is 45 degrees from the temporal side;
4. The magnification of the microscope shall be adjusted to 10 times;
5. Ask the patient to look forward during the examination;
6. Observe the shape of the patient's iris and stimulate the pupil with strong light to see if there is contraction;
7. Time: 3-8 seconds
Lens:
Operator: 1 Adjust the slit lamp to slit light during inspection;
2. The light intensity of slit lamp shall be adjusted to the height;
3. The angle of slit lamp light source is 10-45 degrees;
4. The magnification of microscope shall be adjusted from low magnification to high magnification;
5. Ask the patient to look forward during the examination;
6. The width of the slit lamp slit is 2mm. The slit lamp takes a narrow light source and is aligned
In the pupil area, scan the quasicrystal with the focal length and observe the crystal in the pupil area.
7. Time: 9-15 seconds

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Time of issue:2021-04-12 13:48:04

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