Ophthalmologists’ strategy for the prevention and control of coronavirus pneumonia with conjunctivitis or with conjunctivitis as the first symptom / 中华实验眼科杂志

China is currently in a critical stage of controlling the outbreak of novel coronavirus pneumonia (COVID-19). As ophthalmologists working in the center of Wuhan city, the virus’s front line, we recently found conjunctivitis in five COVID-19 patients of a total of 92 COVID-19 patients.One of these five patients had conjunctivitis as the first symptom and was then diagnosed with COVID-19.These observations suggest: the mechanism and pathway of transmission of the novel coronavirus need to be further clarified; the symptoms of conjunctivitis accompanying novel coronavirus infection and conjunctiva as an important entrance point of the virus need to be further verified; early diagnosis, implementation of medical isolation, and giving appropriate treatment to patients with asymptomatic and mild-symptom conjunctivitis are essential to prevent the spread of the epidemic; those with conjunctivitis symptoms should be distinguished from other types of viral conjunctivitis; strict personal protection measures should be taken; and more sensitive techniques should be developed as soon as possible for virus detection in tear and conjunctiva swabs.

Vitrectomy combined with tissue plasminogen activator and fraxiparine for fibrin exudation caused by bacterial endophthalmitis in rabbits / 中华眼底病杂志

Objective To observe the therapeutic effects of vitrectomy combined with tissue plasminogen activator(r-tPA) and fraxiparine on bacterial endophthalmitis. Methods Forty pigmented rabbits were randomly divided into experimental and control group with 20 rabbits in each. The left eyes underwent intra-vitreous injection with 105/ml bacteria of staphylococcus epidermidis 0.1 ml. After 8-14 hours, vitrectomy was performed on all of the animals. Fraxiparine with the final concentration of 6 IU/ml was only added to balanced salt solution in the experimental group during the operation, and the extend of intraocular fibrin exudation was observed by slit lamp and indirect ophthalmoscope after the operation. If the exudation occurred on the 1st, 3rd, 7th, 14th and 21st day postoperatively, 125 mg/ml r-tPA 0.1 ml should be injected into vitreous from the 1st day after operation on. Results Fibrin exudation in the pupil area and vitreous body was much less in experimental group than that in the control group after the surgery. Conclusion vitrectomy combined with r-tPA and fraxiparine may alleviate the extent of fibrosis in bacterial endophthalmitis and improve the prognosis.

Analysis of changes of visual acuity, multifocal electroretinogram and optical coherence tomogram before and after successful idiopathic macular hole surgery / 中华眼底病杂志

Objective To observe the changes of visual acuity?multifocal electroretinogram (mfERG) and optical coherence tomogram(OCT) before and after successful idiopathic macular hole (IMH) surgery, and evaluate the efficiency of the IMH surgery. Methods A total of 28 eyes of 28 patients with IMH who underwent vitrectomy during February 2001 and May 2002 in our hospital were collected. visual acuity, mfERG, and OCT were examined preoperatively and 1, 3, 6, and 12 months postoperatively, respectively. The results were analyzed statistically compared with 33 eyes in control group. Results (1) OCT showed that 27 eyes (96.43%) had anatomic closure of the macular hole 1 month after the surgery without recurrence in 12 months. Just 1 eye (3.57%) failed in the closure within 1 year. (2) The visual acuity was much higher in the eyes 1 year after surgery, especially within 6 months postoperatively, than that before the vitrectomy(P

Therapeutic effect of hyperxia liquid on posttraumatic optic nerve injuries / 中华创伤杂志

Objective To analyze the characteristics of visual evoked potential (VEP) and the role of VEP in detecting posttraumatic optic nerve injury and evaluate the value of hyperxia liquid in treatment of posttraumatic optic nerve injury. Methods A total of 84 patients with optic nerve injury were divided into control group (n=47, received the general treatments) and treatment group (n=37, treated with hyperxia liquid on the basis of the general treatments) that were monitored regularly by VEP at days 1, 7, 14 and 21 respectively after treatment to analyze and compare latency, amplitudes, visual acuity and treatment result. Results After injury, abnormality of VEP occurred at days 1-7, reached the peak at days 7-14, and then markedly relieved at day 21. Compared with control group, degree of VEP abnormality was significantly lower (P