A5003991556- Corneal surgery and disorders
- Ophthalmology and Visual Impairment Studies
- Glaucoma and retinal disorders
- Corneal Surgery and Treatments
- Ocular Surface and Contact Lens
- Intraocular Surgery and Lenses
- Retinal Diseases and Treatments
- Ocular Infections and Treatments
- Dupuytren's Contracture and Treatments
- Cutaneous Melanoma Detection and Management
- Orthopedic Surgery and Rehabilitation
- Elbow and Forearm Trauma Treatment
- Ophthalmology and Eye Disorders
- Retinal Imaging and Analysis
- Musculoskeletal synovial abnormalities and treatments
- Visual perception and processing mechanisms
Chinese University of Hong Kong
1998-2024
Hong Kong Eye Hospital
2015-2024
Hong Kong Polytechnic University
2022
University of Hong Kong
2017
To compare astigmatic correction between femtosecond-assisted laser in situ keratomileusis (LASIK) and small-incision lenticule extraction (SMILE).A total of 111 patients were included this prospective study. Fifty-seven eyes treated with LASIK 54 SMILE for myopia low to moderate (-0.25 -4.0 D) astigmatism. Uncorrected distance visual acuity (UDVA), corrected manifest refraction measured preoperatively at 1 3 months postoperatively. Visual refractive outcomes reported. Changes astigmatism...
To report the 1-year results of an investigation into whether there is additive effect between 0.01% atropine and orthokeratology (ortho-k), in a single-masked, two-arm, randomised controlled trial: Combined Atropine with Orthokeratology (AOK) for myopia control study (ClinicalTrials.gov number: NCT02955927).Chinese children aged 6 11 years 1.00-4.00 D myopia, astigmatism <2.50 D, no more than 1.00 anisometropia, were randomly assigned either to AOK group or ortho-k only (OK) at 1:1 ratio....
Purpose: The purpose of this study is to present the design and one month's preliminary results a 2-year randomized trial, Combined Atropine with Orthokeratology (AOK), for myopia control study.Methods: Children aged 6 <11 years 1.00–4.00 D were randomly assigned AOK group or ortho-k alone (OK) group. Subjects are required attend routine aftercare visits (first-overnight, 1 week, 2 weeks, 3 month, every months after commencement lens wear). Clinical outcomes, including performance, changes...
Abstract Purpose To compare the changes in higher order aberrations (HOA’s) for photopic and mesopic pupil diameters children undergoing orthokeratology treatment (OK) or combined 0.01% atropine with (AOK), their association axial elongation. Methods Children aged 6 to <11 years 1.00–4.00 D of myopia were randomly assigned each group. Photopic quantified using automated pupillometry HOA’s measured a Hartmann‐Shack aberrometer Badal system control accommodation. rescaled fitted th Zernike...
To compare the astigmatic correction in high myopic astigmatism between small-incision lenticule extraction and laser situ keratomileusis (LASIK) using vector analysis.Hong Kong Laser Eye Center, Hong Kong.Retrospective case series.Patients who had of 3.0 diopters (D) or more either femtosecond laser-assisted LASIK were included. Only left eye was included for analysis. Visual refractive results presented compared groups.The study comprised 105 patients (40 eyes group 65 group.) The mean...
Abstract Purpose Euthyroid Graves’ ophthalmology (EGO) refers to the subgroup of thyroid eye disease patients with distinct clinical presentations. This study evaluated ocular surface and meibomian gland changes in EGO patients. Methods A cross-sectional was conducted at The Chinese University Hong Kong including 34 age-and sex- matched healthy controls. Outcome measures include anterior segment examination, keratographic meibographic imaging. Results Between age sex-matched controls,...
Background. To compare the early outcome of combined SMILE and collagen crosslinking (SMILE Xtra) with SMILE. Method. Prospective, comparative interventional study 21 eyes receiving Xtra using a low energy protocol 32 control only. The outcomes were compared at 1, 3, 6 months postoperatively. Results. Both groups had myopia spherical equivalent refraction (SEQ) > 4.00 D. group thinner preoperative central corneal thickness residual stromal bed (p < 0.021). At months, no lost more than 1 line...
Purpose: To investigate the effect of learning curve for small-incision lenticule extraction during first 2 years experience. Methods: Small-incision was performed using 500-kHz VisuMax femtosecond laser (Carl Zeiss Meditec) by same surgeon. The initial 100 patients since surgeon started operating independently were considered as group 1; recent 2. settings and technique used. visual refractive outcomes compared between groups at postoperative 1 week 6 months. Vector analysis eyes with...
We compared the visual and refractive outcomes between 2 different incisional sites in small incision lenticule extraction (SMILE) for low myopic astigmatism. This was a contralateral eye study. Consecutive cases that underwent bilateral SMILE surgery were included. Procedures both eyes identical apart from location of opening incision. The set on temporal side right (Group 1), while superior left 2). Twenty-nine patients with mean age 35.0 ± 9.6 years Preoperative parameters comparable...
Abstract Background Standard epithelium‐off collagen cross‐linking using Dresden protocol (S‐CXL) is the standard of care for progressive keratoconus. Despite its efficacy, epithelial debridement associated with pain, delayed visual rehabilitation, stromal oedema and haze. Minimising these complications while achieving a comparable efficacy remains an unmet need. Methods Comparative studies between transepithelial iontophoresis‐assisted CXL (I‐CXL) S‐CXL reporting outcomes visual,...
Purpose: To investigate the ex vivo elastic modulus of human corneal stroma using tensile testing with optical coherence tomography (OCT) imaging and its correlation in measurements visualization Scheimpflug technology. Methods: Twenty-four specimens extracted from stromal lenticules through small incision lenticule extraction were cut into strips for uniaxial tests. In biomechanical responses evaluated preoperatively technology (CorVis ST). The clinical characteristics dynamic response...
Abstract We prospectively compared visual and refractive outcomes in patients with high myopia myopic astigmatism after small-incision lenticule extraction (SMILE) photorefractive keratetctomy (PRK) mitomycin C. Sixty-six eyes of 33 (mean age, 29.7 ± 5.6 years) were included (SMILE: 34 eyes, PRK 32 eyes). Preoperatively, no significant difference was noted manifest spherical equivalent (p = 0.326), sphere 0.277), cylinder 0.625) between both groups. At 1 month, there differences logMAR...
<h3>Objectives</h3> To evaluate and compare the change in corneal biomechanical properties after microincision lenticule extraction (MILE) small incision (SMILE). <h3>Methods</h3> In this prospective study, 60 eyes received MILE surgery with 2 mm opening incision, while 64 SMILE procedure 5 incision. Corneal hysteresis (CH), resistance factor (CRF) 37 other waveform parameters were quantitatively assessed using ocular response analyser (ORA) preoperatively up to 6 months postoperatively. All...
To compare higher-order aberrations (HOAs) after small incision lenticule extraction (SMILE) in patients with and without intraoperative angle kappa adjustments.This is a retrospective case series. One hundred six eyes of 106 who underwent SMILE at Tianjin Eye Hospital (Tianjin Medical University, Tianjin, China) for correction myopia myopic astigmatism were divided into 2 groups. The first group consisted adjustment the second adjustment. Preoperative postoperative visual outcome,...
Background We described a modified ‘hydroexpression’ technique for the lenticule removal during small-incision extraction (SMILE) surgery and compared results with conventional forceps method. Methods This was retrospective, comparative study of 50 patients who underwent SMILE by same surgeon. 1-week 3-months postoperative after using hydroexpression technique. Main outcome measures included uncorrected distance visual acuity, corrected refractive accuracy, safety index efficacy index....
To investigate the variations of corneal volume (CV) after small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) analyze influences biomechanical properties on changes refraction CV. Ninety-seven eyes 97 patients undergoing SMILE FS-LASIK were included this retrospective study. CV was measured with Scheimpflug-based topography at preoperatively day 1, week months 1 3 postoperatively. within 5 mm diameter defined as central region...
Purpose: To investigate environmental factors associated with corneal morphologic changes. Methods: A cross-sectional study was conducted, which enrolled adults of the Han ethnicity aged 18 to 44 years from 20 cities. The cornea-related morphology measured using an ocular anterior segment analysis system. geographic indexes each city and meteorological daily city-level data past 40 (1980–2019) were obtained. Correlation analyses at level multilevel model eye performed. Results: In total,...