ABSTRACT
Objective To investigate the clinical effects of preoperative eye position training on femtosecond laser-assisted laser in situ keratomileusis(FL-LASIK)? Methods One hundred and sixty-eight myopia patients(328 eyes)scheduled for selective FL-LASIK were randomly divided into the experiment group of 85 cases(166 eyes)and the control group of 83 cases(162 eyes)?The patients in the control group were given the routine preoperative education and the patients in the experiment group received the preoperative intervention of eye position besides routine preoperative education? The two groups were compared in terms of intraoperative changes of eye position,corneal topography and the postoperative visual acuity? Results The frequency of eye position adjustment and machine stopping in the experiment group was significantly smaller than that of the control group(P 0?05)? Conclusion Preoperative training of eye position may maintain ideal eye position and reduce the frequency of downtime due to eye position adjustment during FL-LASIK,which may ensure the successful completion of FL-LASIK?
ABSTRACT
Objective To observe the features of the manifestations of fundus fluorescein angiography (FFA) in multiple sclerosis (MS) and their value in clinical diagnosis. Methods The clinical data of 42 patients (84 eyes) with MS diagnosed by magnetic resonance imaging (MRI) and examination of cerebrospinal fluid (CSF) were retrospectively analyzed. The clinical data included visual acuity, ocular fundus examined by direct ophthalmoscope after mydriasis, FFA, visual field, CSF,visual evoked potential (VEP) and MRI examination. Results In 42 patients (84 eyes),the positive detectable rate of examination of direct ophthalmoscope, CSF, visual field, VEP, and MRI was 36.9%, 21.4%, (71.4%, and) 83.3% respectively. Abnormal results of FFA were found in 44 eyes (52.38%), including papillitis in 4 eyes (4.76%)at the early stage with extended physiological scotoma and central scotoma; neuroretinitis in 7 eyes (8.33%)at the medium stage with central or para- central scotoma; optic atrophy in 33 eyes(39.29%) at the late stage with centripetal constriction and even tubular visual field. Conclusion The main angiographic features of MS are papillitis, neuroretinitis and optic atrophy. The manifestations of FFA combined with the results of examination of CSF,visual field, VEP and MRI is helpful for comprehensive and exact diagnosis of MS.