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In ophthalmology, gonioscopy is a routine procedure that measures the angle between the iris and the cornea (the iridocorneal angle), using a goniolens (also known as a gonioscope) together with a slit lamp or operating microscope. [1] [2] Its use is important in diagnosing and monitoring various eye conditions associated with glaucoma.
Local anaesthetic nerve blocking has been recommended to facilitate surgery. [2] Topical anaesthetics may be used at the same time as an intracameral lidocaine injection to reduce pain during the operation. [6] Oral or intravenous sedation may also be used to reduce anxiety.
It should not however, be used as a replacement for the gonioscopy examination but rather be used as a means of refuting or confirming the results of a gonioscopy examination. [3] The Van Herick's technique has become the most commonly used qualitative method of assessing the size of the anterior chamber angle (ACA).
The Heidelberg Retinal Tomography is a diagnostic procedure used in ophthalmology.The Heidelberg Retina Tomograph (HRT) is an ophthalmological confocal point scanning laser ophthalmoscope [1] for examining the cornea and certain areas of the retina using different diagnostic modules (HRT retina, HRT cornea, HRT glaucoma).
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Trabeculectomy is a surgical procedure used in the treatment of glaucoma to relieve intraocular pressure by removing part of the eye's trabecular meshwork and adjacent structures. It is the most common glaucoma surgery performed and allows drainage of aqueous humor from within the eye to underneath the conjunctiva where it is absorbed.
Dilated fundus examination (DFE) is a diagnostic procedure that uses mydriatic eye drops to dilate or enlarge the pupil in order to obtain a better view of the fundus of the eye. [1] Once the pupil is dilated, examiners use ophthalmoscopy to view the eye's interior, which makes it easier to assess the retina , optic nerve head , blood vessels ...
Alternatively, if an individual correctly identifies all optotypes on the 20/40 lines except 2, they will be assigned 20/40-2. When an individual cannot read the chart, visual acuity is assessed using alternative methods that do not involve the chart. CF is used when an individual can see and count fingers at a certain distance.