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Transcorneal tube erosion of an ahmed valve implant in an adult.

Al-Shahwan S - Middle East Afr J Ophthalmol (2010)

Bottom Line: Ahmed valve implants are currently used to manage high-risk complicated adults and pediatric glaucoma when standard filtration surgery is unsuccessful.Despite its success, the Ahmed valve shunt has significant complications particularly in the anterior segment.Periodic observation of tube position is recommended.

View Article: PubMed Central - PubMed

Affiliation: Glaucoma Division, King Khaled Eye Specialist Hospital, P.O. Box 7191, Riyadh 11462, Saudi Arabia.

ABSTRACT
Ahmed valve implants are currently used to manage high-risk complicated adults and pediatric glaucoma when standard filtration surgery is unsuccessful. Despite its success, the Ahmed valve shunt has significant complications particularly in the anterior segment. We report an unusual case of transcorneal tube erosion of an Ahmed valve implant in an adult that resulted from long-standing tube-corneal touch. Periodic observation of tube position is recommended.

No MeSH data available.


Related in: MedlinePlus

Photomicrograph demonstrating transconjunctival (arrowhead) and corneal erosion of the tube as evidenced by corneal thinning and full thickness opacity (arrows) surrounded by hyperemic conjunctiva. Note the broken prolene anchoring suture at the site of conjunctival erosion
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Figure 0001: Photomicrograph demonstrating transconjunctival (arrowhead) and corneal erosion of the tube as evidenced by corneal thinning and full thickness opacity (arrows) surrounded by hyperemic conjunctiva. Note the broken prolene anchoring suture at the site of conjunctival erosion

Mentions: Ten months later, the patient returned complaining of foreign body sensation, redness, tearing, and mild ocular tenderness for several days. On examination, visual acuity was 20/200 in the left eye and IOP was 29 mmHg. Slit lamp examination revealed an extruded tube with melting of the pericardial patch, conjunctival erosion, and sterile corneal infiltrate adjacent to the tube [Figure 1] that was Seidel negative with mucous secretion partially covering the area. The anterior chamber was deep with a mild anterior chamber reaction. The remaining examination was unremarkable. During the removal of the tube and plate, the anterior chamber remained deep without leakage at the limbus or the area of corneal opacity. The plate appeared to in normal position without migration.Figure 1


Transcorneal tube erosion of an ahmed valve implant in an adult.

Al-Shahwan S - Middle East Afr J Ophthalmol (2010)

Photomicrograph demonstrating transconjunctival (arrowhead) and corneal erosion of the tube as evidenced by corneal thinning and full thickness opacity (arrows) surrounded by hyperemic conjunctiva. Note the broken prolene anchoring suture at the site of conjunctival erosion
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2991460&req=5

Figure 0001: Photomicrograph demonstrating transconjunctival (arrowhead) and corneal erosion of the tube as evidenced by corneal thinning and full thickness opacity (arrows) surrounded by hyperemic conjunctiva. Note the broken prolene anchoring suture at the site of conjunctival erosion
Mentions: Ten months later, the patient returned complaining of foreign body sensation, redness, tearing, and mild ocular tenderness for several days. On examination, visual acuity was 20/200 in the left eye and IOP was 29 mmHg. Slit lamp examination revealed an extruded tube with melting of the pericardial patch, conjunctival erosion, and sterile corneal infiltrate adjacent to the tube [Figure 1] that was Seidel negative with mucous secretion partially covering the area. The anterior chamber was deep with a mild anterior chamber reaction. The remaining examination was unremarkable. During the removal of the tube and plate, the anterior chamber remained deep without leakage at the limbus or the area of corneal opacity. The plate appeared to in normal position without migration.Figure 1

Bottom Line: Ahmed valve implants are currently used to manage high-risk complicated adults and pediatric glaucoma when standard filtration surgery is unsuccessful.Despite its success, the Ahmed valve shunt has significant complications particularly in the anterior segment.Periodic observation of tube position is recommended.

View Article: PubMed Central - PubMed

Affiliation: Glaucoma Division, King Khaled Eye Specialist Hospital, P.O. Box 7191, Riyadh 11462, Saudi Arabia.

ABSTRACT
Ahmed valve implants are currently used to manage high-risk complicated adults and pediatric glaucoma when standard filtration surgery is unsuccessful. Despite its success, the Ahmed valve shunt has significant complications particularly in the anterior segment. We report an unusual case of transcorneal tube erosion of an Ahmed valve implant in an adult that resulted from long-standing tube-corneal touch. Periodic observation of tube position is recommended.

No MeSH data available.


Related in: MedlinePlus