How do you do a indirect Fundoscopy?
Indirect Ophthalmoscopy 101
- Dilate properly. To conduct a good peripheral exam, the patient’s eyes must be well dilated.
- Position the patient for optimal viewing.
- Choose the right lens.
- Minimize lens distortion.
- Adjust the indirect headset.
- Depress the sclera.
- Ask for help when you need it.
What is indirect Fundoscopy?
The binocular indirect ophthalmoscope, or indirect ophthalmoscope, is an optical instrument worn on the examiner’s head, and sometimes attached to spectacles, that is used to inspect the fundus or back of the eye. It produces an stereoscopic image with between 2x and 5x magnification.
How do you use indirect lenses?
Using the indirect:
- Alignment: Put the indirect on, and ensure your oculars and light spot are properly centered.
- Adjust the brightness: Don’t go crazy on the brightness (60-80% is generally enough on most models).
- Choose your spot size: If the patient’s pupil is wide and dilated, use the largest spot size.
Why indirect ophthalmoscope is called indirect?
BIO is one of the ways used to view the retina, with a wide field of the retina and stereoscopic view. BIO also allows dynamic observation of the retina by moving the BIO device, lens, and applying scleral depression. The process is “indirect” because the fundus is viewed through a hand held condensing lens.
Why it is called direct ophthalmoscope?
The handheld instrument that your primary care physician uses to look into your eyes is called a direct ophthalmoscope. It was invented in 1851 and provides good, but limited visualization of the back of the eye. The viewer must be very close to the face of the patient.
What is laser indirect ophthalmoscopy?
Binocular laser indirect ophthalmoscopy (LIO), introduced in the early 1980s,1 is an essential tool for retinal specialists. For patients under general anesthesia, including pediatric or uncooperative patients, standard laser treatments using a slit lamp may be difficult and sometimes impossible.
How do you do an indirect laser?
In this procedure, the ophthalmologist applies the laser using a head-mounted ophthalmoscope and an indirect lens measuring 20, 28, or 30 diopters held above the eye. This creates a virtual (indirect) image of the retina between the lens and the ophthalmoscope and avoids the placement of a contact lens on the cornea.
Where is the image in indirect ophthalmoscopy formed?
In indirect ophthalmoscopy, a real and inverted image is formed between the condensing lens and the observer. The advantage of stereopsis (depth perception) and a larger field of view makes indirect ophthalmoscope (IDO) more useful both in retina clinics and during posterior segment surgeries.
What do you need to know about the fundoscopic exam?
Fundoscopic / Ophthalmoscopic Exam Visualization of the retina can provide lots of information about a medical diagnosis. These diagnoses include high blood pressure, diabetes, increased pressure in the brain and infections like endocarditis. Introduction to the Fundoscopic / Ophthalmoscopic Exam
What kind of ophthalmoscopy is done on the fundus?
Ophthalmoscopy is a routine exam done by ophthalmologists to examine the inside of the back of the eye, also known as the fundus or the posterior segment. Although there are several types of ophthalmoscopy, we will focus on Binocular Indirect Ophthalmoscopy (BIO) in this article.
What causes optic disc blurring during Fundoscopic exam?
Optic disc blurring in the setting of increased intracranial pressure is referred to as papilledema. Papilledema can be caused by anything that causes increased pressure in the brain such as brain tumors, pseudotumor cerebri, sinus thrombosis, hydrocephalus, meningitis or encephalitis, malignant hypertension.
How to improve field of view during indirect ophthalmoscopy?
Generally, use the white light filter. A diffuser can improve the field of view and is softer and more comfortable for the patient. Adjust the light intensity to allow yourself a clear view while attempting to make the patient comfortable. 6. Depress the sclera This allows for dynamic viewing of the retina.
