What are the illumination techniques of slit lamp?
Direct focal illumination, Specular reflection, Transillumination or retroillumination, Indirect lateral illumination or Indirect proximal illumination and.
How do you check for corneal edema?
Symptoms of Corneal Edema
- Eye pain or discomfort in light.
- Pain or tenderness when you touch your eye.
- A scratchy feeling in your eye.
- Hazy circles, or “halos,” around lights.
- In rare or serious cases, painful blisters in your eye.
What are the two types of slit lamps?
There are two different types of illumination system: a The Tower or Haag Streit type system where the light source is at the top of the device. b The Lower or Zeiss type system where the light source is at the bottom of the illumination system. Generally this type is lower cost and often preferred in optometry.
What is meant by specular reflection?
Specular reflection is a type of surface reflectance often described as a mirror-like reflection of light from the surface. In specular reflection, the incident light is reflected into a single outgoing direction. It is further reflected at a similar angle.
How can I improve my slit lamp skills?
#1: Positioning
- Get yourself positioned before the patient.
- Get your chair at the correct height to sit comfortably and adjust the table so you can sit up straight while looking through the oculars.
- Never duck your head, never tilt your head, never use the slit lamp while standing.
How many types of illumination are there in slit lamp?
Slit lamp examination : Biomicroscopy, types of illumination procedure of examination. The slit lamp consists of two parts, an illumination system and a low-power binocular microscope mounted horizontally.
Why is slit lamp exam done?
A slit lamp exam can help diagnose the following conditions: macular degeneration, a chronic condition affecting the part of the eye that is responsible for central vision. detached retina, a condition when the retina, which is an important layer of tissue at the back of the eye, becomes detached from its base.
Will corneal edema go away on its own?
Corneal edema can be transient and resolve itself after a few weeks or months, without treatment. But chronic edema may be resolved only after corneal transplantation. Corneal edema is a widespread phenomenon following cataract surgery: 450,000 post-operative cataract patients will suffer from transient corneal edema.
What medications can cause corneal edema?
The use of certain drugs can also increase your risk for corneal edema:
- benzalkonium chloride, a preservative used in many eye drops and anesthetic drugs.
- chlorhexidine (Betasept, Hibiclens), an antiseptic used to disinfect the skin before surgery.
- amantadine (Gocovri), a drug used to treat viruses and Parkinson’s disease.
Why is it called slit lamp Biomicroscopy?
When you have an eye checkup, you will likely undergo a slit lamp exam. You will usually have the slit lamp exam at an optometry or ophthalmology office. The exam is also called biomicroscopy. It allows the doctor to microscopically examine your eyes for any abnormalities or problems.
How do you conduct a slit lamp exam?
The general approach is this:
- Set up your beam.
- Hold the lens about 5-7mm (varies based on lens) from the patient’s eye with your index finger and thumb.
- Align the slit lamp beam so it is perpendicular to the patient’s eye, going straight through the pupil.