Megalopapilla
From Wikipedia, the free encyclopedia
| Megalopapilla | |
|---|---|
| Specialty | Ophthalmology |
| Types | 2 types |
| Differential diagnosis | Normal tension glaucoma |
Megalopapilla is a non-progressive human eye condition in which the optic nerve head (optic disc) has an enlarged diameter, exceeding 2.1 mm with no other morphological abnormalities.
Presentation
In megalopapilla the optic disc diameter exceeds 2.1 mm (or surface area more than 2.5 mm2[2]) with an increased cup-to-disc ratio.[3] Although the optic disc is looks abnormal, the disc colour, sharpness of disc margin, rim volume, configuration of blood vessels and intraocular pressure will be normal.[4][2] Visual field is normal except for an enlarged blind spot.[5] Visual acuity may be normal,[5] or occasionally reduced.[1]