The Safety of Office-Based Pterygium Surgery.

Purpose: Hospital and ambulatory eye surgical procedures continue to transition to the office setting. Pterygium surgery is the most commonly performed ocular surface surgical procedure in the world. No studies to date have evaluated its safety in the office-based surgical setting. Our study evaluates the safety, complication rate, cost-savings, and cosmetic satisfaction of office-based pterygiectomy.

Design: Retrospective case series.

Methods: A retrospective review was performed. Procedures were performed in an office-based suite with a Zeiss surgical microscope by two board-certified ophthalmologists under topical anesthesia and oral sedation. Over a 3 year period (2013-2016), 1071 office-based pterygiectomies were performed. Follow-up was performed via in-person office visits. Data collected included: date of service; location of pterygium (nasal, temporal, or both); primary or recurrent; use of mitomycin C, fibrin glue, and amniotic membrane; preoperative and postoperative refraction; intraocular pressure (IOP); endothelial cell density (ECD); patient-reported pain (as measured by an eleven-point visual analog scale, 0-10); cosmetic satisfaction; intraoperative surgical time; speculum width; incidence of ptosis (defined as a decrease in MRD1 by 2 mm) postoperatively at 12 weeks and 1 year and postoperative complications. Postoperative measures were checked at 1 day, 2 weeks, 1 month, 2 months, 3 months, 6 months, and 1 year. The average operational and procedural costs were compared between in-office and comparable surgical centers and academic hospital cases in our area.

Results: A total of 1015 pterygia from 992 eyes were examined postoperatively. One case of central retinal artery occlusion due to peribulbar anesthetic injection with epinephrine at postoperative week 2 was noted, leading to the removal of epinephrine from the anesthetic regimen. At the 1-year follow-up, 393 pterygium cases in 343 eyes were assessed. One-year complication rates included overall recurrence (N = 8/393; 2.04%), dellen (N = 12/393; 3.05%), and granuloma (N = 15/393; 3.82%), ptosis 2.6% (N = 9/343). There were no cases of infection. Patient-reported pain scores remained less than 1.0 peri‑ and postoperatively, and cosmetic satisfaction was greater than 88% at 1 year. The average cost of office-based pterygium surgery was $1795 ($1700-$1890, depending on supplies used). In comparison, the costs at local surgical centers and hospitals were $3812.50 ($2625-$5000) and $5562 ($5095-$6029), respectively.

Conclusion: Office-based pterygiectomy is safe, cost-effective, and offers low recurrence rates and high patient satisfaction.