Association Between Preoperative Fasting Blood Sugar Levels and Postoperative Visual Outcomes in Diabetic Patients Undergoing Cataract Surgery at Yasothon Hospital
Keywords:
Cataract, Fasting Blood Sugar, Diabetic Patients, Visual Outcome, Postoperative ComplicationsAbstract
Background: Cataract is a leading cause of reversible visual impairment that can be treated effectively with surgery. Proper preoperative preparation, particularly in diabetic patients, is essential to achieving favorable surgical outcomes. Glycemic control before cataract surgery is believed to reduce the risk of postoperative complications and enhance visual outcomes.
Objective: To evaluate the relationship between preoperative fasting blood sugar (FBS) levels and postoperative visual outcomes and complications in diabetic patients undergoing cataract surgery at Yasothon Hospital.
Method: This retrospective chart review included diabetic patients who underwent cataract surgery at Yasothon Hospital between January 1 and December 31, 2024. Patients were divided into three groups based on preoperative FBS levels: Group 1 (FBS <140 mg/dL), Group 2 (FBS 140–179 mg/dL), and Group 3 (FBS ≥180 mg/dL). Postoperative outcomes, including LogMAR VA and complications such as corneal edema, elevated intraocular pressure (IOP), posterior capsular opacification (PCO), diabetic macular edema (DME), diabetic retinopathy progression, and endophthalmitis, were assessed at 1 week, 1 month, and 3 months.
Results: A total of 283 eyes were included: 164 in Group 1, 76 in Group 2, and 44 in Group 3. At 3-month follow-up, mean visual acuity was 0.34 ± 0.34 in Group 1, 0.30 ± 0.24 in Group 2, and 0.33 ± 0.28 in Group 3, with no statistically significant difference (p = 0.581). Postoperative complication rates (corneal edema, elevated intraocular pressure (IOP), posterior capsular opacification (PCO), diabetic macular edema (DME), diabetic retinopathy progression, and endophthalmitis) were not significantly different among the three groups.
Conclusion: Preoperative fasting blood sugar levels in diabetic patients were not significantly associated with postoperative visual outcomes or complication rates within 3 months after cataract surgery.
Keywords: Cataract, Fasting Blood Sugar, Diabetic Patients, Visual Outcome, Postoperative Complications
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