12/19/2023 0 Comments Binocular indirect ophthalmoscopeIn arterial hypertension, hypertensive changes of the retina closely mimic those in the brain and may predict cerebrovascular accidents (strokes). In patients with diabetes mellitus, regular ophthalmoscopic eye examinations (once every 6 months to 1 year) are important to screen for diabetic retinopathy as visual loss due to diabetes can be prevented by retinal laser treatment if retinopathy is spotted early. In patients with headaches, the finding of swollen optic discs, or papilledema, on ophthalmoscopy is a key sign, as this indicates raised intracranial pressure (which could be due to hydrocephalus, benign intracranial hypertension (aka pseudotumor cerebri) or brain tumor, amongst other conditions. It is used to detect and evaluate symptoms of various retinal vascular diseases or eye diseases such as glaucoma. Ophthalmoscopy is done as part of a routine physical or complete eye examination, mainly done by optometrists and ophthalmologists. It is used for peripheral viewing of the retina. An indirect ophthalmoscope can be either monocular or binocular. Furthermore, it allows a better view of the fundus of the eye, even if the lens is clouded by cataracts. It provides a wider view of the inside of the eye. An indirect ophthalmoscope, on the other hand, constitutes a light attached to a headband, in addition to a small handheld lens.The pan-ophthalmoscope has a larger primary lens with a variable focusing, allowing for a wider field-of-view. This type of ophthalmoscope is most commonly used during a routine physical examination. The direct ophthalmoscope is an instrument about the size of a small flashlight (torch) with several lenses that can magnify up to about 15 times.Slightly beyond equator Įach type of ophthalmoscopy has a special type of ophthalmoscope: Indirect ophthalmoscopy one that produces an inverted, or reversed, image of 2 to 5 times magnification.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |