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- Title
Associated factors, diagnosis and management of Acanthamoeba keratitis in a referral Center in Southern China.
- Authors
Jing Zhong; Xingyi Li; Yuqing Deng; Ling Chen; Shiyou Zhou; Weilan Huang; Shiqi Lin; Jin Yuan; Zhong, Jing; Li, Xingyi; Deng, Yuqing; Chen, Ling; Zhou, Shiyou; Huang, Weilan; Lin, Shiqi; Yuan, Jin
- Abstract
<bold>Background: </bold>To analyse the associated factors, diagnosis, clinical manifestations and therapeutic effects of Acanthamoeba keratitis at a tertiary ophthalmic centre in Southern China.<bold>Methods: </bold>A retrospective clinical study was performed in fifteen patients who were admitted to Zhongshan Ophthalmic Centre (ZOC) from January 2004 to December 2014. The patients' pathogenesis-associated factors were analysed, and preoperative diagnoses were determined using corneal scraping cultures and/or confocal microscopy followed. All diagnoses were confirmed by postoperative pathological examinations. At follow-up, best-corrected visual acuity (BCVA), the recurrence rate and graft transparency were evaluated to assess therapeutic effects.<bold>Results: </bold>The main pathogenic factors observed in the fifteen patients were a history of injury or a foreign body entering the eyes (12 cases). In all, Acanthamoeba keratitis was preoperatively diagnosed in 5 cases using corneal scraping cultures or confocal microscopy. Ocular symptoms included redness, photophobia, tearing, and blurred vision. Penetrating keratoplasty was performed in thirteen patients, and postoperative pathological examinations were performed to confirm these diagnoses. The logarithm of the minimum angle of resolution (logMAR) of visual acuity was significantly improved after keratoplasty (p < 0.01). No recurrence was observed, and approximately 90% of the corneal grafts were found to be transparent during the follow-up period.<bold>Conclusions: </bold>Corneal trauma may be the main pathogenic factor that causes Acanthamoeba keratitis in southern China. Corneal scraping combined with confocal microscopy was helpful for achieving a correct diagnosis. Early keratoplasty combined with amoebicidal therapy is an effective treatment strategy in Acanthamoeba keratitis.
- Subjects
CHINA; ACANTHAMOEBA keratitis; CORNEA surgery; CONFOCAL microscopy; VISUAL acuity; DIAGNOSIS; ANTIPROTOZOAL agents; ASIANS; CORNEA; CORNEAL transplantation; GRAFT versus host reaction; CORNEA injuries; MEDICAL referrals; MICROSCOPY; OPHTHALMOLOGY; DISEASE relapse; SPECIALTY hospitals; RETROSPECTIVE studies; THERAPEUTICS
- Publication
BMC Ophthalmology, 2017, Vol 17, p1
- ISSN
1471-2415
- Publication type
journal article
- DOI
10.1186/s12886-017-0571-7