Search

AIM: To evaluate a deep learning-assisted diagnostic system with an artificial intelligence for the detection of diabetic retinopathy(DR). METHODS:A total of 186 patients(372 eyes)with diabetes were recruited from January to July 2017. Discrepancies between manual grades and artificial intelligence results were sent to a reading center for arbitration. The sensitivity and specificity in the detection of DR were determined by comparison with artificial intelligence diagnostic system and experts human grading. RESULTS:Based on manual grades, the results as follows: non DR(NDR)in 42 eyes(11.3%), 330 eyes(88.7%)in different stages of DR. Among 330 DR eyes, there were mild non proliferative DR(NPDR)in 62 eyes(16.7%), moderate NPDR in 55 eyes(14.8%), severe NPDR in 155 eyes(41.7%), and proliferative DR(PDR)in 58 eyes(15.6%). Based on artificial intelligence diagnostic system, the results were as follows: NDR in 38 eyes(10.2%), PDR in 44 eyes(11.8%), others were NPDR. The sensitivity and specificity of artificial intelligence diagnostic system, compared with human expert grading, for the detection of any DR were 0.82 and 0.91, and the kappa value was 0.77(χ2=20.39, PCONCLUSION: This study shows that a deep learning-assisted diagnostic system with an artificial intelligence for grading diabetic retinopathy is a reliable alternative to diabetic retinopathy assessment, thus the use of this system may be a valuable tool in evaluating the DR.

AIM: To discuss the efficacy of senile cataract with corneal astigmatism treated with Acrysof toric intraocular lens(IOL)implantation. to observe the clinical preoperative and postoperative visual function of Acrysof toric IOL implantation.METHODS: In this is a retrospective observational study, 34 senile(39 eyes)cataract patients with corneal astigmatism underwent phacoemulsification combined with Acrysof toric IOL implantation. The preoperative and 3mo postoperative uncorrected visual acuity(UCVA), best corrected visual acuity(BCVA), postoperative residual astigmatism, toric lens axis, and spectacle independence were detected and compared.RESULTS: Thirty-four patients(39 eyes)underwent phacoemulsification combined with Acrysof toric IOL implantation successfully. Preoperative UCVA was 0.15±0.06, 3mo postoperative UCVA increased to 0.65±0.15(PPPCONCLUSION: Implantation of Acrysof totic IOL for correcting astigmatism is effective, the IOL has good rotation stability, and provides postoperative visual function.

AIM: To evaluate the efficacy of optical coherence tomography(OCT)in highly myopic macular hole after silicone oil tamponade. METHODS: A retrospective analysis of 20 cases of high myopia macular hole with retinal detachment after vitrectomy with silicone oil tamponade was performed. The mean follow-up time was 7 months. OCT examination was given to assess the macular hole closure and retinal reset during the follow-up. Best corrected visual acuity(BCVA)was recorded.RESULTS: There were three kinds of postoperative OCT performance: macular hole closure in 2 eyes(10%), macular hole was not closed but the retinal reattachment in 16 eyes(80%), macular hole was not closed with shallow retinal detachment in 2 eyes(10%). Postoperative BCVA improved compared with that of preoperative. The improvement of visual acuity was closely related to the anatomy reset of macular hole. No serious postoperative complications occurred.CONCLUSION: OCT for macular hole in high myopia silicone oil tamponade postoperative follow-up can confirm the diagnosis of macular hole closure and retinal reset, providing the means of reference for the timing of silicone oil removal.

AIM: To evaluate the relation between the position shift of intraocular lenses(IOL)and the change of refraction, after phacoemulcification with IOL implantation.METHODS: This study analyzed the anterior chamber depth, the change of the refraction, the distant vision and the near vision in 102 eyes of 102 patients at 1, 3, 6mo and 2a after phacoemulcification and monofocal one-piece foldable IOL implantation. The position shift of IOL detected by anterior segment optical coherence tomography(AS-OCT)was observed too. All of the patients were followed up for 24±3.8mo.RESULTS: The distant vision of the 102 eyes after cataract surgery and IOL implantation at 1, 3, 6mo and 2a were 0.78±0.13,0.75±0.14,0.72±0.12,0.72±0.10 respectively. The near vision were 0.38±0.12,0.41±0.13,0.46±0.12,0.47±0.10. The anterior chamber depth after surgerces were 3.75±0.16, 3.69±0.13, 3.61±0.12, 3.62±0.11mm. And the refractive degree was -0.47±0.26,-0.65±0.28,-0.93±0.24,-0.95±0.20. The position of the IOL was forward in the AS-OCT with time. The differences of the four indicators at 1, 3 and 6mo postoperatively were significant by multiple comparison(PCONCLUSION: The movement of IOL in eyes after cataract surgery leads to the reduction of the distance vision and the increase of the near vision, which were stabilized at 6mo after surgeries.

AIM: To observe the corneal refractive state stability time and changes of corneal refraction after excision of pterygium.METHODS:There were 46 cases(54 eyes), who had undergone excision of pterygium, randomly selected for corneal topography examination operated on the 3rd, 7th, 14th, 30th and 90th day after surgery. And statistic analysis was undertaken.RESULTS:Astigmatism after pterygium excision decreased significantly. Ks value, astigmatism in the 3rd postoperative day compared with that in other observation phases showed differences of statistical significance(Pth days compared with that in other observation phases showed differences of no statistical significance(P>0.05). CONCLUSION: Corneal refractive status is stable in 7 days afterpterygium excision surgery.