Corpus: Palpebral fissure
AI translation
This text has been translated by an AI and may sound raw. It will be reviewed shortly. Thank you for your patience!
AI translation
This text has been translated by an AI and may sound raw. It will be reviewed shortly. Thank you for your patience!
Synonym: Rima palpebrarum
English:
Definition[Bearbeiten]
The palpebral fissure is the cleft space enclosed by the upper and lower eyelid through which the eye is visible.
Physiology[Bearbeiten]
The width of the palpebral fissure determines the amount of light entering the eye and is determined by various muscles. These include:
- Musculus tarsalis superior
- Musculus tarsalis inferior
- Musculus levator palpebrae superioris
- Musculus orbicularis oculi
Pathology[Bearbeiten]
Various diseases can lead to a pathological narrowing or widening of the palpebral fissure, e.g:
- Narrowing of the palpebral fissure
- Blepharospasm
- Horner's syndrome
- Widening of the palpebral fissure
- Endocrine orbitopathy
- Cicatricial ectropion
Diagnostics[Bearbeiten]
The following dimensions of the palpebral fissure can be measured as part of the ophthalmological examination:[1]
- Eyelid fissure width: vertical expansion
- palpebral fissure width: horizontal expansion
Source[Bearbeiten]
- ↑ Lang et al, Augenheilkunde essentials, Thieme Verlag, 2015