Search

Your search keyword '"Chan, Tommy C. Y."' showing total 243 results
Start Over Author "Chan, Tommy C. Y."
243 results on '"Chan, Tommy C. Y."'

3. Keratoconus Genes in Chinese

Author

Wang, Yu Meng, Kam, Ka Wai, Chan, Tommy C. Y., Young, Alvin L., Jhanji, Vishal, Chen, Guy L. J., Pang, Calvin C. P., Singh, Arun D., Series Editor, Prakash, Gyan, editor, and Iwata, Takeshi, editor

Published
2019
Full Text
View/download PDF

4. Myopia Genes in Asians

Author

Tang, Shumin, Wang, Yu Meng, Kam, Aziz K. W., Chan, Tommy C. Y., Pang, Calvin C. P., Yam, Jason C. S., Chen, Guy L. J., Singh, Arun D., Series Editor, Prakash, Gyan, editor, and Iwata, Takeshi, editor

Published
2019
Full Text
View/download PDF

11. Myopia Genes in Asians

Author

Tang, Shumin, primary, Wang, Yu Meng, additional, Kam, Aziz K. W., additional, Chan, Tommy C. Y., additional, Pang, Calvin C. P., additional, Yam, Jason C. S., additional, and Chen, Guy L. J., additional

Published
2018
Full Text
View/download PDF

12. Keratoconus Genes in Chinese

Author

Wang, Yu Meng, primary, Kam, Ka Wai, additional, Chan, Tommy C. Y., additional, Young, Alvin L., additional, Jhanji, Vishal, additional, Chen, Guy L. J., additional, and Pang, Calvin C. P., additional

Published
2018
Full Text
View/download PDF

27. Accelerated corneal collagen cross-linking in progressive keratoconus: Five-year results and predictors of visual and topographic outcomes.

Author

Chan, Tommy, Tsui, Rachel, Chow, Vanissa, Lam, Jasmine, Wong, Victoria, Wan, Kelvin, Chan, Tommy C Y, Tsui, Rachel W Y, Chow, Vanissa W S, Lam, Jasmine K M, Wong, Victoria W Y, and Wan, Kelvin H

Subjects
KERATOCONUS, COLLAGEN, VITAMIN B2, CORNEAL topography, PHOTOSENSITIZERS, CORNEAL cross-linking, CHEMICAL reagents, LONGITUDINAL method, ULTRAVIOLET radiation
Abstract

Purpose: To analyze the 5-year results of accelerated corneal collagen crosslinking (CXL) for progressive keratoconus and identify preoperative characteristics predictive of visual and topographic outcomes.Methods: A prospective interventional case series. Nineteen eyes of 19 patients receiving accelerated CXL with settings of 18 mW/cm2 for 5 min were included. Clinical and topographic parameters were assessed. Linear regression and logistic regression were used to compare the R2 and odds ratio (OR), respectively, between baseline characteristics and postoperative outcomes.Results: Corrected distance visual acuity (CDVA) remained stable from 0.28 ± 0.21 to 0.25 ± 0.18 logMAR (P = 0.486). The mean cylindrical refraction was stable (P = 0.119). The maximal keratometry (Kmax) decreased from 61.99 ± 10.37 to 59.25 ± 7.75 D (P < 0.001), flattening in the flattest and steepest meridians and mean keratometry were also observed (P ≤ 0.040). The mean anterior elevation at the apex reduced from 21.42 ± 16.69 to 18.53 ± 12.74 μm (P = 0.013) and changes in posterior elevation were non-significant (P = 0.629). Preoperative Kmax best predicted the postoperative change in Kmax (R2 = 0.55, P < 0.001) compared to the other baseline characteristics (P ≤ 0.028), whereas preoperative CDVA was the only significant predictor of postoperative change in CDVA (R2 = 0.41, P = 0.003). Accelerated CXL is less likely to fail in eyes with a steeper preoperative Kmax (OR = 0.74, P = 0.040) or greater posterior elevation at the apex (OR = 0.91, P = 0.042).Conclusion: Kmax significantly decreased following accelerated CXL. Eyes with worse preoperative CDVA and higher Kmax were more likely to have an improvement in visual acuity and corneal flattening. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results