Abstract
Purpose :
Ahmed valve is the most widely used filtrating device in the world for the management of Glaucoma not responsive to initial treatment. At Nuestra Señora de la Luz Hospital (HNSL) Ahmed valve implant surgery is done with relative frequency it is useful to know the incidence of early complications and the changes in intraocular pressure before and after the surgical placement of the Ahmed valve.
Methods :
A retrospective, descriptive and transversal study was done. 57 eyes from 57 patients from the Glaucoma department at HNSL underwent Ahmed valve implant surgery from March to July 2015 and were submitted to exploration 24 hours after the procedure in search of early complications. Patients who underwent Ahmed valve implant surgery at other institutions were excluded from this review.
Results :
Of the 57 included patients 32 (56%) were men and 25 (44%) were women, Neovascular Glaucoma was the main cause for Ahmed valve implant surgery in 54% of cases, the average age of patients at the moment of the study was reported to be 36 years among patients from 16 to 85 years old. Ocular hypotony was found to be the most frequent complication 24 hours after the procedure in 23 out of 57 patients. the average of postoperative intraocular pressure was 14.04 mmHg. A comparative analysis was made between preoperative and postoperative intraocular pressure which showed that among patients with or without complications intraocular pressure was reduced with a statistically significant p value of p<0.001.
Conclusions :
Ocular hypotony and hyphema are the most frequent complications associated with Ahmed valve implant surgery. In this review it was found that a preoperative intraocular pressure higher than 31mmHg was the most frequent associated factor with the presentation of ocular hypotony and a preoperative intraocular pressure higher than 44mmHg was the most frequent associated factor with the presentation of hyphema
This is an abstract that was submitted for the 2017 ARVO Annual Meeting, held in Baltimore, MD, May 7-11, 2017.