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"Optical coherence tomography" 2 results
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Objective
To investigate the characteristic of OCT images of congenital macular coloboma and its utility in the diagnosis of the diseases. Methods
Seven patients (9 eyes) with congenital macular coloboma who had been examined by visual acuity determination, slit lamp examination, ophthalmoscope and fluorescein angiography received OCT scan and fundus color photography. The results were retrospectively analyzed.
Results
The manifestation of congenital macular coloboma by OCT was the retinal and choroidal tissues focally pitted outwards along with sclera. The 3 dimensions of pit: horizontal diameter 668 - 4 339mu;m (3 119 in average), vertical length 668 - 4 531 mu;m (2 591 in average), pits depth 230 - 2 146mu;m(1 084 in average).The retinal neurosensory layer became thin and defect. And the retinal neurosensory layer was thinner in the centre than that near the edge. Reflection of retinal pigment epithelium was uneven and discontinued. The dark area of choroid was enlarged.
Conclusions
It can be clearly shown by OCT that abnormal structure of retina and out layer of choroid in congenital macular coloboma. It is implied that the characteristic of OCT is helpful in the diagnosis of congenital macular coloboma.
(Chin J Ocul Fundus Dis, 2005,21:97-99)
Release date：2016-09-02 05:52
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ObjectiveTo observe the changes of macula in patients with high myopia after phacoemulsification. MethodsIn 20 patients with high myopia with ocular axial length≥27 mm, optical coherence tomography (OCT) was performed on the operative and contralateral eyes 1 week before and after monocular phacoemulsification, respectively, and the OCT images of macula of the operative eyes were observed and compared.ResultsOne week before and after phacoemulsification, the mean macular fovea thickness of the patients with high myopia was (131.6±16.37) μm and (189.75±45.69) μm, respectively, with a significant difference (t=2.805, P=0.01). Simultaneously, the mean macular fovea thickness of the contralateral eyes was (133.5±15.12) μm and (133.5±14.63) μm, respectively, with a non-significant difference (t=1.367, P=0.853). In 20 operative eyes 1 week after phacoemulsification, 3 had vitreous strand around the macula with retinal thickening, 1 had retinoschisis in macular area, and 2 had obvious retinal thickening with slight retinal edema.ConclusionRetinal thickening occurs in the patients with high myopia after phacoemulsification. Traction of retina by vitreous strand or subclinical retinoschisis may occur in some patients.(Chin J Ocul Fundus Dis, 2005,21:90-92)
Release date：2016-09-02 05:52
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