ABSTRACT
BACKGROUND/AIM: The purpose of the current study was to compare the vascular endothelial growth factor-A (VEGF-A) levels in the aqueous humor of patients with primary open angle glaucoma (POAG) and non-glaucomatous eyes and reveal any potential statistically significant correlations. PATIENTS AND METHODS: This was an observational cross-sectional study. Aqueous humor samples (50-100 µl) were collected under aseptic conditions, from the anterior chamber at the start of glaucoma or cataract surgery. The levels of VEGF-A were measured using a multiplex bead-based immunoassay. RESULTS: Aqueous humor samples were obtained from 76 participants: 39 with POAG and 36 with age-related cataracts as controls. VEGF-A levels were significantly elevated in the POAG group (166.37±110.04 pg/ml, p=0.011) compared to the control group (119.02±49.09 pg/ml). The receiver operating characteristic (ROC) analysis showed that VEGF-A had significant prognostic ability for POAG (AUC=0.67; p=0.006). An optimal cut-off for VEGF-A was found to be 148.5 pg/ml with a sensitivity of 54%, specificity of 81.1%, positive prognostic value (PPV) of 75% and negative prognostic value (NPV) of 62.5%. Logistic regression analysis showed that after adjusting for sex and age, patients with VEGF-A higher than 148.5 pg/ml had almost 10 times greater likelihood for POAG. CONCLUSION: VEGF-A is elevated in patients with POAG and can potentially have a prognostic ability for these patients.
Subject(s)
Aqueous Humor , Glaucoma, Open-Angle , ROC Curve , Vascular Endothelial Growth Factor A , Humans , Glaucoma, Open-Angle/metabolism , Aqueous Humor/metabolism , Vascular Endothelial Growth Factor A/metabolism , Female , Male , Aged , Middle Aged , Cross-Sectional Studies , Prognosis , BiomarkersABSTRACT
PURPOSE: To report the unusual occurrence of peripheral ulcerative keratitis, 10 days after trabeculectomy in a 35-year-old patient with rheumatoid arthritis (RA). METHODS: Observational case report. RESULTS: A 35-year-old patient with RA and secondary Sjögren disease underwent an uneventful fornix-based trabeculectomy. Ten days after surgery, slit-lamp examination revealed a peripheral corneal ulcer extending from 5- to 7-o'clock positions with a surrounding inflammatory infiltrate and adjacent conjunctival injection. The ulcer was treated with systemic and topical steroids, antibiotic eyedrops, artificial tears, and a bandage soft contact lens. Since then, corneal re-epithelialization started and the patient's symptoms subsided. The ulcer improved steadily within 2 months while the patient used a soft contact lens. The ulcer did not reoccur in the 18 months follow-up while the patient remained under systemic treatment. CONCLUSION: This report highlights the importance of careful examination and close postoperative follow-up in patients with RA undergoing any intraocular surgery, to diagnose a possible development of peripheral ulcerative keratitis. Although the incidence is rare, prompt diagnosis of the peripheral ulceration is essential because if untreated it may seriously affect patient's vision.
