Observational studyInternational ophthalmology2023
Clinical observations of corneal topographic and tomographic changes in congenital ptosis eyes: a study in China.
Observational study in International ophthalmology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
5 citing papers in PubMed, 5 citations in OpenAlex.
- Peripheral Hypertrophic Subepithelial Corneal Degeneration.Journal of clinical medicine · 2026Article
- How ptosis affects the visual quality: an overview of visual quality impairments and contributing factors in ptotic eyes.International ophthalmology · 2025Review
- The Impact of the Position of the Upper Eyelid on the Profile of Epithelial Thickness and the Topography of the Cornea.Journal of clinical medicine · 2025Article
- Effective encoder-decoder network for pupil light reflex segmentation in facial photographs of ptosis patients.Scientific reports · 2024Article
- Refractive surprise of irregular astigmatism following cataract surgery in two patients with neglected subclinical corneal ectasia: two case reports.BMC ophthalmology · 2023Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo investigate the impact of drooping eyelid on corneal topographic and tomographic alterations in congenital ptosis eyes.
methodsSeventeen Chinese patients with unilateral congenital ptosis were included in this observational study. Ptosis eyes were included in the ptosis group, while normal contralateral eyes were included in the control group. The marginal reflex distance (MRD) was used to evaluate the severity of ptosis. Topographic and tomographic parameters measured by Pentacam, including keratometric, pachymetric, volumetric parameters as well as topometric indexes and D indexes, were recorded and compared between the ptosis group and the control group. Furthermore, correlation analyses were made between MRD and all measured corneal parameters.
resultsThe value of anterior K1, Km and posterior K2, Km was significantly decreased in the ptosis eyes (p < 0.05). Corneal thickness at the pupil center point and thinnest point was significantly thicker in ptosis group compared with the ones in control group (p < 0.05). Higher ISV, IVA, KI, IHD values were observed in ptosis eyes (p < 0.05). The intergroup difference in MRD showed significant correlation with the difference in ISV (p < 0.05).
conclusionThe whole corneal contour is remodeled to be "flatter" in ptosis eyes. The upper eyelid position was closely associated with the corneal irregularity in ptosis eyes. The reasons for the discrepancy in corneal topography and tomography between ptotic and normal eyes were complicated.
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