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Long-term results after filtering surgery with limbal-based and fornix-based conjunctival flaps
C Auw-Haedrich1, J Funk, T G Boemer
1University Eye Hospital, Freiburg, Germany.
Background And Objective:
To compare the long-term results of filtering surgery using either a limbal-based or fornix-based flap.
Patients And Methods:
From 1985 to 1988, 90 eyes of 81 glaucoma patients undergoing filtering surgery were included in a prospective randomized clinical trial. They were alternately operated on with either a limbal-based or fornix-based conjunctival flap. The authors evaluated the functional and morphologic long-term results of 34 eyes (18 fornix based, 16 limbal based) after a minimum follow-up of 6 years. Intraocular pressure (IOP), visual acuity, visual field, intensity of symptoms due to dry eyes, and corneal overlap of the filtering bleb using planimetry were reexamined.
Results:
No statistically significant difference of IOP reduction, deterioration of visual acuity, deterioration of visual field, sicca score, or corneal overlap of the filtering bleb was found between the limbal-based and fornix-based groups. There was no correlation between corneal overlap of the filtering bleb and the sicca score.
Conclusion:
The long-term results of fornix-based and limbal-based filtering surgery did not show a statistically significant difference.