Eyelid Diseases Clinical Trial
Official title:
Effect of Upper Eyelid Surgeries on Corneal Topography, Corneal High-order Aberration, Corneal Biomechanical Properties, and Corneal Epithelial Thickness
The goal of this prospective observational study is to learn about the impact of conventional eyelid correction surgery on the eye's health and function in ptosis and eyelid retraction patient. The main questions it aims to answer are: • 1. Changes in corneal topography, higher-order corneal aberrations, corneal biomechanical characteristics, and corneal epithelial thickness before and after the surgery 2. Influence of corneal refraction examinations , vision change, and tear film function after the surgery Fifty participants will undergo conventional eyelid correction surgery by the same ophthalmologist (YH Wei) and non-invasive examinations before and after the surgery. The patient will be separate to 2 groups, including 30 with correction for ptosis and 20 with correction for eyelid retraction. The research will collect information of the operated eye and fellow eye, and the data will be compared between operated and fellow eye and with the other group.
Status | Recruiting |
Enrollment | 50 |
Est. completion date | June 30, 2024 |
Est. primary completion date | August 31, 2023 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 20 Years to 80 Years |
Eligibility | Inclusion Criteria: Group 1: - marginal reflex distance 1 (MRD1) ? 2-2.5 mm - levator muscle function (LMF) ? 8 mm Group 2: - with upper scleral show Exclusion Criteria: - pregnancy - previous corneal surgery - with corneal scar - pterygium - keratoconus - significant ocular surface disease - wearing rigid contact lens |
Country | Name | City | State |
---|---|---|---|
Taiwan | National Taiwan University Hospital | Taipei |
Lead Sponsor | Collaborator |
---|---|
National Taiwan University Hospital |
Taiwan,
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Altin Ekin M, Karadeniz Ugurlu S. Prospective analysis of visual function changes in patients with dermatochalasis after upper eyelid blepharoplasty. Eur J Ophthalmol. 2020 Sep;30(5):978-984. doi: 10.1177/1120672119857501. Epub 2019 Jun 17. — View Citation
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* Note: There are 14 references in all — Click here to view all references
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change from best corrected visual acuity at 3 months after the surgery | Assess best corrected visual acuity by qualified optometrists, with Landolt C chart-based examination Record as decimal visual acuity | Baseline, Month 1, Month 3 | |
Primary | Change from intraocular pressure at 3 months after the surgery | Measure intraocular pressure with tonometers in unit of mmHg | Baseline, Month 1, Month 3 | |
Primary | Change from eyeball axial length at 3 months after the surgery | Measure eyeball axial length with A-scan in unit of mm | Baseline, Month 1, Month 3 | |
Primary | Change from slit lamp examination at 3 months after the surgery | Assess local findings with a slit lamp by same and only ophthalmologist, Dr. YH Wei | Baseline, Month 1, Month 3 | |
Primary | Change from margin to reflex distance (MRD) at 3 months after the surgery | Measure margin to reflex distance with a ruler in unit of mm by same and only ophthalmologist, Dr. YH Wei MRD-1: from the corneal light reflex to the level of the center of the upper-eyelid margin MRD-2: from the corneal light reflex to the central portion of the lower eyelid | Baseline, Month 1, Month 3 | |
Primary | Change from levator muscle function (LMF) at 3 months after the surgery | Measure levator muscle function with a ruler in unit of mm by same and only ophthalmologist, Dr. YH Wei LMF: the distance the eyelid travel from downgaze to upgaze while the frontalis muscle is held inactive at the brow | Baseline, Month 1, Month 3 | |
Primary | Change from lagophthalmos at 3 months after the surgery | Measure lagophthalmos with a ruler in unit of mm by same and only ophthalmologist, Dr. YH Wei | Baseline, Month 1, Month 3 | |
Primary | Change from basal tear volume at 3 months after the surgery | Measure basal tear volume with Schirmer's test in unit of mm/5 minutes Schirmer's test: small paper strip with rulers printed is placed over the temporal one-third of the lower lid margin and inserted inside the inferior conjunctival fornices under local infiltrating anesthesia. The strips are removed after 5 minutes and the amount of tears produced in that time is measured by reading off of the length of wetting in millimeters. | Baseline, Month 1, Month 3 | |
Primary | Change from ocular surface disease index (OSDI) at 3 months after the surgery | Interview participants with OSDI questionnaire to assesses dry eye symptoms and the effects on vision-related function by same and only ophthalmologist, Dr. YH Wei | Baseline, Month 1, Month 3 | |
Primary | Change from tear break up time at 3 months after the surgery | Measure tear break up time with Oculus Keratograph 5M (OCULUS, Wetzlar, Germany) in unit of sec | Baseline, Month 1, Month 3 | |
Primary | Change from corneal biomechanical characteristics at 3 months after the surgery | Measure corneal biomechanical characteristics with Oculus Corvis ST tonometer (OCULUS, Wetzlar, Germany) | Baseline, Month 1, Month 3 | |
Primary | Change from corneal topography at 3 months after the surgery | Measure corneal topography with Tomey TMS topographer (TOMEY, Nuremberg, Germany) and record as topography map. | Baseline, Month 1, Month 3 | |
Primary | Change from higher-order corneal aberrations at 3 months after the surgery | Measure higher-order corneal aberrations with Tracey iTrace wavefront aberrometer and corneal topography (TRACEY, Texas, USA), using beam of light projected into the eyes. The wavefront of the reflected light is captured by the machine and collected the distortion and aberration of the cornea. | Baseline, Month 1, Month 3 | |
Primary | Change from corneal epithelial thickness at 3 months after the surgery | Measure corneal epithelial thickness with anterior segment optical coherence tomography in unit of micrometer (Visionix USA, Illinois, USA) | Baseline, Month 1, Month 3 |
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