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A visual field test is an eye examination that can detect dysfunction in central and ... and monitoring of various eye, retinal, optic nerve and brain ...
A particular blind spot known as the physiological blind spot, "blind point", or punctum caecum in medical literature, is the place in the visual field that corresponds to the lack of light-detecting photoreceptor cells on the optic disc of the retina where the optic nerve passes through the optic disc. [2]
Confrontation visual field testing is an important part of a routine ophthalmological or neurological examination. It can be used for rapid and gross assessment of large-scale visual field problems due to ophthalmological or neurological diseases, such as homonymous and heteronymous hemianopias, quadranopsia, altitudinal visual loss, central/centrocecal scotoma etc. [1] [2] Test using a red ...
A swinging-flashlight test may also be desirable if neurologic damage is suspected. The swinging-flashlight test is the most useful clinical test available to a general physician for the assessment of optic nerve anomalies. This test detects the afferent pupil defect, also referred to as the Marcus Gunn pupil. It is conducted in a semidarkened ...
Unilateral loss indicates a possible nerve lesion or deviated septum. This test is usually skipped on a cranial nerve exam. [1] The short axons of the first cranial nerve regenerate on a regular basis. The neurons in the olfactory epithelium have a limited life span, and new cells grow to replace the ones that die off.
The original Amsler grid was black and white. A color version with a blue and yellow grid is more sensitive and can be used to test for a wide variety of visual pathway abnormalities, including those associated with the retina, the optic nerve, and the pituitary gland.
Optic nerve damage could cause or contribute to vision loss (including retinitis pigmentosa). Like priapism, this is an extremely rare side effect that only affects a tiny percentage of Cialis users.
Glaucoma: A group of eye diseases that can cause vision loss due to damage to the optic nerve, generally from increased intraocular pressure. Changes on ophthalmologic exam include deepening and enlargement of the optic cup (leading to a high cup/disc ratio), a more vertical oval optic cup shape, pallor of the disc, and an increase in the blood ...