Estimation of Eyelid Pressure Using a Blepharo-Tensiometer in Patients with Functional Nasolacrimal Duct Obstruction

Lee, Sang Mok; Choi, Youn Joo; Lee, Min Joung

doi:10.1155/2018/8792102

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…The measurement using the blepharo-tensiometer showed that eyelid pressure decreased with age for both the upper and lower eyelids in healthy eyes ( Sakai et al, 2012 ). This pressure increased in dry eye and lid-wiper epitheliopathy ( Yoshioka et al, 2015 ; Yamamoto et al, 2016 ; Yamaguchi and Shiraishi 2018 ) but decreased in functional nasolacrimal duct obstruction ( Kim, Lee, et al, 2018 ). This eyelid pressure is homogenously dissipated and absorbed by the corneal epithelium and conveyed to the underlying tissue.…”

Section: The Impact Of Shear Stressmentioning

confidence: 99%

Unraveling the mechanobiology of cornea: From bench side to the clinic

Shu

Tan

Wang

2022

Front. Bioeng. Biotechnol.

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The cornea is a transparent, dome-shaped structure on the front part of the eye that serves as a major optic element and a protector from the external environment. Recent evidence shows aberrant alterations of the corneal mechano-environment in development and progression of various corneal diseases. It is, thus, critical to understand how corneal cells sense and respond to mechanical signals in physiological and pathological conditions. In this review, we summarize the corneal mechano-environment and discuss the impact of these mechanical cues on cellular functions from the bench side (in a laboratory research setting). From a clinical perspective, we comprehensively review the mechanical changes of corneal tissue in several cornea-related diseases, including keratoconus, myopia, and keratectasia, following refractive surgery. The findings from the bench side and clinic underscore the involvement of mechanical cues in corneal disorders, which may open a new avenue for development of novel therapeutic strategies by targeting corneal mechanics.

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Section: The Impact Of Shear Stressmentioning

confidence: 99%

Unraveling the mechanobiology of cornea: From bench side to the clinic

Shu

Tan

Wang

2022

Front. Bioeng. Biotechnol.

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“…A previous study that used a tactile pressure sensor showed opposite results, wherein the lower eyelid pressure in patients with functional epiphora was lower than in normal controls [ 20 ]. However, this previous study did not compare lacrimal status between patients with functional epiphora and normal controls [ 20 ].…”

Section: Discussionmentioning

confidence: 99%

Relationship Between Eyelid Pressure and Lacrimal Status in Mild Facial Nerve Palsy

Lee¹,

Vaidya²,

Kono³

et al. 2021

Cureus

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Purpose: Facial nerve palsy is frequently associated with both epiphora and dry eye, and orbicularis oculi muscle weakness or paralysis is the main cause of these symptoms. Eyelid pressure is a quantitatively measurable parameter for evaluating the tone and function of the orbicularis oculi muscle. The aim of this study was to examine the relationship between eyelid pressure and lacrimal status in patients with mild facial nerve palsy. Methods: This prospective, interventional study included 10 patients with unilateral facial nerve palsy. The severity of facial nerve palsy was determined using the CADS scale (cornea, static asymmetry, dynamic function, and synkinesis). Eyelid pressure was measured using a blepharo-tensiometer. Lacrimal status was quantified through tear meniscus height (TMH), clinical assessment of meibomian gland dysfunction (MGD) (eyelid margin abnormalities, Marx line, meibum expression, and loss of meibomian glands), corneal fluorescein staining, tear break-up time, and Schirmer test I results. Results: All 10 patients suffered from mild facial nerve palsy without eyelid ectropion or entropion, or gustatory epiphora. Lower eyelid pressure during forceful eye closure was significantly decreased in affected eyes (P = 0.007), but upper eyelid pressure during forceful eye closure and static upper and lower eyelid pressure were not significantly different between the affected and unaffected sides (P > 0.050). The TMH, MGD, and dry eye measurements showed no significant difference between the affected and unaffected eyes (P > 0.050). Conclusions: Mild facial nerve palsy is associated with decreased lower eyelid pressure during forceful eye closure. However, no other differences in upper eyelid pressure during forceful eye closure, static eyelid pressure, TMH, MGD, or dry eye disease symptoms were noted. These results imply that eyelid pressure slightly decreases due to mild facial nerve palsy, but this change may be clinically negligible.

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“…The degree of laxity is considered normal if the distracted distance is less than 2 mm from the cornea; values higher than 6 mm are considered to indicate laxity. Over time, numerous studies have been conducted to evaluate the use of various devices for the assessment of LET [1,[9][10][11][12][13] . However, most of these instruments, including the clamp and latex sensor, were considered infeasible due to their highly variable displacement distances and the overestimated LET values [1,9] .…”

Section: Introductionmentioning

confidence: 99%

A modified 3D stereophotogrammetry-based distraction test for assessing lower eyelid tension

Hou¹,

Meinke²,

Li³

et al. 2022

Int J Ophthalmol

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AIM: To investigate the reliability of a modified three-dimensional distraction test (3D-DT) and three-dimensional pinch test (3D-PT) for assessing lower eyelid tension (LET). METHODS: A cross-sectional study was conducted among 97 volunteers including 97 eyelids with no history of trauma, tumor, or reconstructive surgeries. Six three-dimensional photographs were acquired for each participant, including two photographs obtained in a neutral position (NP), two using a modified 3D-DT with a 15.9-grammes stainless steel eyelid hook performed, and two using 3D-PT. RESULTS: The mean absolute differences between NP, 3D-DT, and 3D-PT measurements varied between 0.07 and 7.42, 0.10 and 13.10, and 0.07 and 15.97, respectively; technical error of measurement varied between 0.05 and 7.81, 0.09 and 10.19, and 0.07 and 12.47, respectively; and relative error measurements varied between 0.10% and 11.50%, 0.16% and 30.51%, and 0.11% and 38.75%, respectively. For intra-rater reliability, the intraclass correlation coefficients (ICCs) were more than 0.80 in seven out of eight measurements obtained in the NP and 3D-DT, whereas those obtained in the 3D-PT were as low as less than 0.30 by rater 1; the ICCs of all the measurements obtained in all the positions (NP, 3D-DT, and 3D-PT) were more than 0.80 by rater 2. For inter-rater reliability six out of eight NP and 3D-DT measurements had an ICC greater than 0.80, whereas those of 3D-PT measurements were less than 0.30. For intra-method reliability, the ICCs of all the NP measurements were more than 0.87, whereas those of the six 3D-DT measurements and four 3D-PT measurements were more than 0.80. CONCLUSION: Our study results prove that the modified 3D-DT, which involves the use of an eyelid hook, can be a highly reliable method for evaluating LET. Furthermore, this novel and simple method may be utilized as the basis for further investigation and routine pre- and postoperative clinical evaluation.

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Estimation of Eyelid Pressure Using a Blepharo-Tensiometer in Patients with Functional Nasolacrimal Duct Obstruction

Cited by 7 publications

References 23 publications

Unraveling the mechanobiology of cornea: From bench side to the clinic

Unraveling the mechanobiology of cornea: From bench side to the clinic

Relationship Between Eyelid Pressure and Lacrimal Status in Mild Facial Nerve Palsy

A modified 3D stereophotogrammetry-based distraction test for assessing lower eyelid tension

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