Pseudopterygium

Pseudopterygium
Pseudopterygium in a rabbit
Specialty	Ophthalmology
Causes	Post inflammatory
Diagnostic method	Eye examination
Differential diagnosis	Pterygium
Treatment	Surgery

Pseudopterygium is the conjunctival adhesion to cornea caused by limbal or corneal inflammation or trauma. The pseudopterygium can be easily distinguished from pterygium by bowman's probe test. ^[1] Because of the lack of adherence of pseudopterygium at every point, the probe can be passed beneath it at some point.

Causes

• Chemical burn ^[2]
• Marginal corneal ulcer ^[3]
• Cicatrizing conjunctivitis ^[3]
• Trauma ^[3]
• Surgery ^[4]

Differential diagnosis

Difference between pterygium and pseudopterygium

	Pterygium	Pseudopterygium
Etiology	Degenerative process	Inflammatory process
Age	Common in adults [5]	Occur in any age
Site	Horizontally, most commonly nasally [4]	Anywhere
Status	Progressive(commonly) or stationary [5]	Always stationary
Neck	Adherent to limbus [5]	Free
Probe test	Probe cannot be passed underneath	Probe can be passed under neck

Treatment

Pseudopterygium can be removed by surgical excision. ^[6]

See also

• Symblepharon
• Pterygium

References

1. Prabhakar, Srinivasapuram Krishnachary (October 2014). "Safety profile and complications of autologous limbal conjunctival transplantation for primary pterygium". Saudi Journal of Ophthalmology. 28 (4): 262–267. doi: 10.1016/j.sjopt.2014.03.006 . ISSN   1319-4534. PMC   4250486 . PMID   25473341.
2. "Pseudopterygium | Columbia Ophthalmology". www.columbiaeye.org.
3. John F, Salmon (13 December 2019). "Conjunctiva". Kanski's clinical ophthalmology : a systematic approach (9th ed.). Elsevier. pp. 198–199. ISBN   978-0-7020-7711-1.
4. "Volume 6, Chapter 35. Pterygium". www.oculist.net.
5. Khurana, AK (31 August 2015). "Diseases of conjunctiva". Comprehensive ophthalmology (6th ed.). Jaypee Brothers. p. 88. ISBN   978-93-5152-657-5.
6. HV, Nema; Nithin, Nema (December 2008). Textbook of ophthalmology (5th ed.). Jaypee Brothers. ISBN   978-81-8448-307-9.