临床与实验眼科学杂志

临床与实验眼科学杂志
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国际标准期刊号: 2155-9570

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Unusual Inflammatory Clinical Presentation after Cataract Surgery and that Thought-Provoking Question: Is this Infection or Toxic Anterior Segment Syndrome?

Anil Kaplan*

Introduction: Toxic Anterior Segment Syndrome (TASS) is a non-infectious anterior chamber reaction caused by ocular surgeries. It usually develops within the first 12-48 hours after surgery. In case of clinical suspicion of TASS, endophthalmitis as a devastating disease should always be excluded. However, the fact that TASS and endophthalmitis can look the same, but the treatment for each is different. Therefore, distinguishing between the two conditions is an important factor in coping with both diseases. It was aimed to describe the features and clinical management that are considered when distinguishing the cause of unexpected inflammatory response after cataract surgery.

Setting: Ege university ophthalmology department, retrospective review of medical records.

Method: A total of 13 patients who developed TASS in our clinic on 3 different days between July 2022 and December 2022 were included in this study. Anterior segment photographs of those 13 patients, the records of ophthalmological examinations of those patients including Best Corrected Visual Acuity (BCVA), ocular pressure, biomicroscopic and fundoscopic examination were collected. Medical data were evaluated retrospectively.

Results: The mean time to onset of clinical symptoms was 27.6 hours. The main complaint was pain in nine patients. The primary symptom in the remainder of the patients was blurred vision. Severe hypopyon was seen in 5 cases. Despite the presence of pain and hypopyon, patients who were treated with topical steroids were closely followed up (every 2 hours) because they were consecutive patients and had relatively acute onset complaints. Inflammation was regressed after an average of 4 hours. No factor causing TASS was found. The BCVA was at the minimum level of 8/10 on the 5th day of surgery.

Conclusion: When distinguishing TASS from endophthalmitis, severe pain, relatively late onset, hyperaemia and the presence of severe hypopyon usually lead ophthalmologists to the clinical diagnosis of endophthalmitis. However, in this study, most of the patients diagnosed with TASS had severe pain, a significant portion of them had hypopyon and the onset of the symptoms is relatively late. Close follow-up immediately after suspicion plays a vital role in clinical diagnosis and management accordingly.

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