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Macular hole on the right eye Classification of Vitreomacular Adhesion, Traction, and Macular Hole (IVTS 2013) Macular degeneration is a condition affecting the tissues lying under the retina, while a macular hole involves damage from within the eye, at the junction between the vitreous and the retina itself. There is no relationship between ...
An example of the Landolt C eye chart (also known as the Japanese eye chart). Numerous types of eye charts exist and are used in various situations. For example, the Snellen chart is designed for use at 6 meters or 20 feet, and is thus appropriate for testing distance vision, while the ETDRS chart is designed for use at 4 meters. [16]
Amsler grid, Chart 1. There are 7 types of Amsler grid charts. All charts measure 10 cm × 10 cm (3.9 in × 3.9 in), which when viewed at a distance of 33 cm (13 in) from the eye can be used to measure defects in the central 20 degrees of the visual field. [3]
Congruous homonymous hemianopia with macular sparing is a feature of occlusion of posterior cerebral artery supplying the anterior part of the visual cortex. [1] Bilateral homonymous hemianopia with macular sparing producing a picture of ring scotoma is seen in bilateral occipital lobe lesions. [1] Pupillary reflex is normal; Optic atrophy does ...
The following other wikis use this file: Usage on ast.wikipedia.org Estensiones del Alfabetu Fonéticu Internacional; Usage on da.wikipedia.org
The human eye is a sensory organ in the visual system that reacts to visible light allowing eyesight.Other functions include maintaining the circadian rhythm, and keeping balance.
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
Macular scarring is formation of the fibrous tissue in place of the normal retinal tissue on the macular area of the retina which provides the sharpest vision in the eyes. It is usually a result of an inflammatory or infectious process. [1] Other etiologies include macular pucker (macular detachment), macular hole, and age-related macular ...