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Visual acuity with Near chart without correctors Visual acuity with eye chart at Near 15.7 inches (400 mm) and without (sc: Latin sine correctore) correctors (spectacles); Ncc is with (cc: Latin cum correctore) correctors. See Visual_acuity#Legal_definitions: VA OS Left visual acuity VA OD Right visual acuity VDU Visual display unit VF Visual field
In conclusion, although the Van Herick technique for anterior chamber angle assessment offers many benefits including being non-invasive, quick, a comparatively accessible technique, with satisfactory specificity and sensitivity values, for the detection of angle closure; it is nonetheless not devoid of limitations.
Multiple types of scotomas form inside Bjerrum's area, typically in patients with open-angle glaucoma. Of particular note is the arcuate scotoma (also known as the Bjerrums scotoma). It starts at the blind spot , arching over the macular area, and ends as a horizontal line nasally.
Exfoliation syndrome: Exfoliation syndrome is a classic cause of secondary open-angle glaucoma, a common symptom of exfoliation syndrome is a cloudy layer on the anterior lens capsule. [ 2 ] Aphakic and pseudophakic glaucoma: Aphakic glaucoma is a common side-effect of cataract surgery which causes an increase in IOP.
Of the different types of glaucoma, the most common are called open-angle glaucoma and closed-angle glaucoma. [7] Inside the eye, a liquid called aqueous humor helps to maintain shape and provides nutrients. The aqueous humor normally drains through the trabecular meshwork. In open-angle glaucoma, the draining is impeded, causing the liquid to ...
Mean deviation (MD): Derived from the total deviation and represents the overall mean departure from the age-corrected norm. [18] A negative value indicates field loss, while a positive value indicates that the field is above average. A P value is provided if the global indices are abnormal. It provides a statistical representation of the ...
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Over many years, glaucoma has been defined by an intraocular pressure of more than 20 mm Hg. Incompatible with this (now obsolete) definition of glaucoma was the ever larger number of cases that have been reported in medical literature in the 1980s and 1990s who had the typical signs of glaucomatous damage, like optic nerve head excavation and thinning of the retinal nerve fiber layer, while ...