不同年龄段共同性外斜视患者眼表健康状况评估

目的:利用Oculus Keratograph眼前节分析仪研究不同年龄段共同性外斜视患者眼表泪液情况。方法:收集我院眼科门诊诊断为共同性外斜视的患者66例,将患者依据年龄段分为2～7岁组、8～18岁组、19～46岁组三组。应用Oculus眼前节分析仪研究其眼表情况:包括泪河高度、刺激性泪河高度、眼红指数、非侵袭性BUT等。结果:2～7岁组分别与8～18岁组、19～46岁组在BUT、颞侧结膜眼红指数、颞侧睫状眼红指数、鼻侧睫状眼红指数比较差异有统计学意义(P<0.05)。同一年龄段不同部位眼红指数差异及同一年龄段主导眼、非主导眼间眼红指数差异无统计学意义(P>0.05)。共同性外斜视患者眼红指数随年龄增长呈现正向直线相关关系。结论:共同性外斜视患者在术前存在干眼和泪膜不稳定,学龄前儿童围手术期需要特别引起注意,需尽快完善国内各年龄段儿童眼表数据。

自体穿透性角膜移植治疗角膜盲的临床观察

目的:观察自体穿透性角膜移植手术治疗角膜盲的临床效果。方法:采用回顾性分析,选择2014-01/2018-03行自体穿透性角膜移植治疗的患者8例8眼(角膜盲),随访1a,观察术中并发症、术后视力、术后角膜透明度和术后并发症等。结果:术后1wk时8眼患者术后裸眼视力均>0.02,复明率100%;术后1mo时5眼患者矫正视力超过0.3,3眼患者因术前白内障影响术后矫正,视力提高到0.08~0.2;术后1a,8眼患者原角膜盲眼植片均透明,无感染复发或继发感染情况发生。结论:自体角膜移植手术后角膜植片易于生长,无排斥反应,术后并发症较少,且治疗花费少,既可为单眼失明合并角膜盲的患者提供长期的有用视力,又可减轻其经济负担,为患者带来巨大利益。

Ocular manifestations of internal carotid artery dissection

Internal carotid artery dissection(ICAD) results from disruption of the intima of the arterial wall, and can lead to intrusion of blood into the arterial wall and form an intramural hematoma. The hematoma can compress the true lumen of the vessel, causing functional stenosis or occlusion. The classic triad signs of ICAD include pain in the ipsilateral neck, head and orbital regions; a(partial) Horner syndrome; and cerebral or retinal ischemia. However, not all ICAD patients present with this classic signs. In some cases, ocular manifestations are the initial(and sometimes the only) findings. We summarize the ocular manifestations associated with ICAD in 3 categories: visual symptoms, oculosympathetic palsy, and ocular motor nerve palsy.

Effect of topical 0.05% cyclosporine A on the tear protein lacritin in a rat model of dry eye

AIM: To observe the effect of topical 0.05% cyclosporine A(CsA) on the ocular surface and tear protein lacritin in a botulinum B-induced dry eye rat model. METHODS: A total of 36 female SD rats were randomly divided into 3 groups, botulinum B was injected into the right lacrimal gland of all rats. Group A and group B were treated with 0.05% CsA and 0.1% sodium hyaluronate, respectively, 3 times daily. The control group was not treated. Basal tear flow, corneal epithelial defects, and lacritin levels were measured. RESULTS: Tear secretion in all rats was reduced on day 3 and was even lower on day 7 postoperation(P<0.05). Tear secretion in group A increased by day 14 and was at the preoperative level on day 42. Tear secretion in group B and control rats was lower on days 14 and 42 compared with preoperative level(P<0.05). Corneal fluorescein staining in group A was higher on day 3, peaked on day 7, and then decreased gradually from day 7 until day 14, returning to normal by day 42 post-procedure. However, in group B, corneal fluorescein staining had improved, but was not fully recovered by day 42. Corneal fluorescein staining was more intense than before the operation and then in the control group at all time points. Tear protein lacritin levels reached the lowest levels on day 7 in all groups. In group A, tear protein lacritin levels began to increase on day 14 and were normal on day 42. In group B, tear protein lacritin levels began to increase on day 14, but had not completely recovered on day 42. In the control group, tear protein lacritin levels remained low post-procedure. CONCLUSION: CsA 0.05% prompts tear protein lacritin expression in a rat model of dry eye and improves the signs and symptoms of dry eye disease.

Corneal collagen cross-linking and liposomal amphotericin B combination therapy for fungal keratitis in rabbits

AIM： To observe the therapeutic effect of corneal collagen cross-linking（CXL） in combination with liposomal amphotericin B in fungal corneal ulcers.METHODS： New Zealand rabbits were induced fungal corneal ulcers by scratching and randomly divided into 3groups, i.e. control, treated with CXL, and combined therapy of CXL with 0.25% liposomal amphotericin B（n =5 each）. The corneal lesions were documented with slit-lamp and confocal microscopy on 3, 7, 14, 21 and 28 d after treatment. The corneas were examined with transmission electron microscopy（TEM） at 4wk.RESULTS： A rabbit corneal ulcer model of Fusarium was successfully established. The corneal epithelium defect areas in the two treatment groups were smaller than that in the control group on 3, 7, 14 and 21d（P 〈0.05）. The corneal epithelium defect areas of the combined group was smaller than that of the CXL group（P 〈0.05） on 7 and 14 d, but there were no statistical differences on 3, 21 and 28 d. The corneal epithelium defects of the two treatment groups have been healed by day 21. The corneal epithelium defects of the control group were healed on 28 d. The diameters of the corneal collagen fiber bundles（42.960 ±7.383 nm in the CXL group and 37.040±4.160 nm in the combined group） were thicker than that of the control group（24.900±1.868 nm）,but there was no difference between the two treatment groups. Some corneal collagen fiber bundles were distorted and with irregular arrangement, a large number of fibroblasts could be seen among them but no inflammatory cells in both treatment groups. CONCLUSION： CXL combined with liposomal amphotericin B have beneficial effects on fungal corneal ulcers. The combined therapy could alleviate corneal inflammattions, accelerate corneal repair, and shorten the course of disease.