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Indications and Outcomes of Emergency Keratoplasty in a Major New Zealand Eye Tertiary Referral Center, 2000 to 2021.
Cornea 2024 July 9
PURPOSE: To report the indications and outcomes of emergency keratoplasty over a 21-year period in Greenlane Clinical Centre, the major tertiary eye referral center in Auckland, New Zealand (Aotearoa).
METHODS: A retrospective review of medical records of all emergency keratoplasties performed in Greenlane Clinical Centre from January 2000 to September 2021 was conducted. Demographic, preoperative, intraoperative, and 1-year postoperative data were collected.
RESULTS: Emergency keratoplasty was performed in 102 eyes of 97 patients (54 men), comprising 5.6% of transplants performed (N = 1830) in this period. The mean age was 53 years (range = 4-95 years, SD = 20). Patients of Māori ethnicity were overrepresented (31%). Corneal perforation was present in 90% of eyes, and microbial keratitis was the most common indication. Bacteria were the most commonly isolated organisms (38%). The mean preoperative and 12-month postoperative best potential corrected distance visual acuity was 1.6 and 1.2 (logMAR), respectively. All cases of therapeutic keratoplasty achieved initial therapeutic success, with no eyes lost or requiring repeat emergency keratoplasty. Complications included nonhealing epithelial defects (19%), cataract (19%), glaucoma (15%), allograft rejection (13%), and corneal melting (5%). Fifteen cases (15%) had documented graft failure at 12 months. Multivariate analysis revealed that younger age was the only statistically significant factor associated with failure at 12 months.
CONCLUSIONS: Emergency keratoplasty was the indication for 5.6% of keratoplasties performed. Our results compare favorably with those in the literature, possibly because of early intervention and lower incidence of fungal keratitis. The reported overrepresentation of Māori has important implications for health access and delivery in New Zealand.
METHODS: A retrospective review of medical records of all emergency keratoplasties performed in Greenlane Clinical Centre from January 2000 to September 2021 was conducted. Demographic, preoperative, intraoperative, and 1-year postoperative data were collected.
RESULTS: Emergency keratoplasty was performed in 102 eyes of 97 patients (54 men), comprising 5.6% of transplants performed (N = 1830) in this period. The mean age was 53 years (range = 4-95 years, SD = 20). Patients of Māori ethnicity were overrepresented (31%). Corneal perforation was present in 90% of eyes, and microbial keratitis was the most common indication. Bacteria were the most commonly isolated organisms (38%). The mean preoperative and 12-month postoperative best potential corrected distance visual acuity was 1.6 and 1.2 (logMAR), respectively. All cases of therapeutic keratoplasty achieved initial therapeutic success, with no eyes lost or requiring repeat emergency keratoplasty. Complications included nonhealing epithelial defects (19%), cataract (19%), glaucoma (15%), allograft rejection (13%), and corneal melting (5%). Fifteen cases (15%) had documented graft failure at 12 months. Multivariate analysis revealed that younger age was the only statistically significant factor associated with failure at 12 months.
CONCLUSIONS: Emergency keratoplasty was the indication for 5.6% of keratoplasties performed. Our results compare favorably with those in the literature, possibly because of early intervention and lower incidence of fungal keratitis. The reported overrepresentation of Māori has important implications for health access and delivery in New Zealand.
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