Pubfacts - Scientific Publication Data
  • Categories
  • |
  • Journals
  • |
  • Authors
  • Login
  • Categories
  • Journals

Search Our Scientific Publications & Authors

Publications
  • Publications
  • Authors
find publications by category +
Translate page:

What are the visual benefits of eyelid squinting?

Authors:
James E Sheedy Susan D Truong John R Hayes

Optom Vis Sci 2003 Nov;80(11):740-4

The Ohio State University, College of Optometry, Columbus, OH 43218, USA.

Purpose: We propose that eyelid squint can reduce the impact of several conditions known to cause eyestrain such as uncorrected refractive error, accommodative dysfunction, presbyopia, and glare. Clinicians commonly accept that squint improves visual acuity (VA) in the presence of refractive error, and even though the benefit of eyelid squint in bright light seems self-evident, data are not available to support either benefit. The purpose of this study was to measure the effect of eyelid squint on VA in the presence of refractive blur and on visual field sensitivity.

Methods: Nineteen subjects with optimal refractive correction were tested, with and without squinting, as follows: (1) distance VA with induced refractive errors of +0.50, +1.00, +2.00, +3.00, +1.00 -1.00 x 90, and +1.00 -1.00 x 180; (2) near VA with induced refractive errors of -1.00 x 90 and -1.00 x 180; and (3) central and peripheral threshold visual fields with a Humphrey Field Analyzer. Differences in visual acuity between squinting and nonsquinting were tested for significance with repeated-measures analysis of variance, and differences in visual fields were tested using mixed model analysis of variance with repeated measures.

Results: Eyelid squint significantly improved (p < 00.016) distance VA measurements for 1.00 to 3.00 D of induced myopia. The squint-induced VA improvement increased from 0.06 logarithm of the minimum angle of resolution for 1.00 D to 0.24 logarithm of the minimum angle of resolution for 3.00 D of myopia. Eyelid squint also significantly reduced visual field sensitivity below the horizontal meridian by an average of 1.4 dB, by 1.6 dB on the horizontal meridian, and with increasing reductions in the vertical field up to 11.6 dB for measurements 40 degrees above fixation. This pattern of decreased superior field sensitivity would decrease visual discomfort from overhead glare.

Conclusions: The results provide empirical support that eyelid squint improves visual acuity for subjects with refractive error and reduces glare in the superior visual field.

Download full-text PDF

Source
http://dx.doi.org/10.1097/00006324-200311000-00009DOI Listing
November 2003

Publication Analysis

Top Keywords

eyelid squint
24
visual acuity
12
refractive error
12
visual field
12
visual
10
induced refractive
8
presence refractive
8
squint improves
8
improves visual
8
refractive errors
8
-100 180
8
angle resolution
8
field sensitivity
8
horizontal meridian
8
minimum angle
8
logarithm minimum
8
differences visual
8
analysis variance
8
+100 -100
8
visual fields
8

Keyword Occurance

Similar Publications

Compressive optic neuropathy (CON) in Graves' disease caused by hypertrophy of levator and superior rectus muscles: A case report.

Authors:
Takahisa Hirokawa Masashi Mimura Masahiro Tonari Yohei Sato Yasushi Fujita Junko Matsuo Hidehiro Oku Jun Sugasawa Tsunehiko Ikeda

Medicine (Baltimore) 2021 Apr;100(14):e25062

Department of Ophthalmology, Osaka Medical College, Osaka, Japan.

Rationale: Enlargemento of the medial rectus is the most predominant factor of compressive optic neuropathy (CON) in Graves' disease. This case report indicates that CON could develop only from the hypertrophic superior levator and superior rectus (SL/SR) muscle in a patient with poorly controlled Graves' disease, and described the possible risk of FT3-thyrotoxicosis with a prominent goiter to develop the current rare case with a review of the literature.

Patient Concerns: A 66-year-old woman undergoing endocrine management of hyperthyroidism with prominent goiter visited the Department of Ophthalmology due to right-eye upper-eyelid retraction. Read More

View Article and Full-Text PDF
April 2021
Similar Publications

Ocular and adnexal anomalies in craniofacial microsomia: Type and prevalence in a multicentre cohort study.

Authors:
W Rooijers R W Renkema S E Loudon T Khoshnaw B L Padwa D J Dunaway M J Koudstaal C R Forrest C J J M Caron

Int J Oral Maxillofac Surg 2021 Mar 19. Epub 2021 Mar 19.

The Dutch Craniofacial Centre, Department of Oral and Maxillofacial Surgery, Erasmus University Medical Centre, Sophia's Children's Hospital Rotterdam, Rotterdam, The Netherlands.

The aim of this multicentre retrospective cohort study was to describe and categorize the types of ocular and adnexal anomalies seen in patients with craniofacial microsomia (CFM) and to determine their prevalence. In addition, the relationship between the OMENS-Plus and Pruzansky-Kaban classification for each patient and the presence of ocular anomalies was investigated. A total of 881 patients with CFM from four different craniofacial centres were included. Read More

View Article and Full-Text PDF
March 2021
Similar Publications

Early Experience With the Clinical Use of Teprotumumab in a Heterogenous Thyroid Eye Disease Population.

Authors:
Stefania B Diniz Liza M Cohen Kelsey A Roelofs Daniel B Rootman

Ophthalmic Plast Reconstr Surg 2021 Mar 8. Epub 2021 Mar 8.

Division of Orbital and Ophthalmic Plastic Surgery, Jules Stein Eye Institute, University of California, Los Angeles, California, U.S.A.

Purpose: To describe the clinical course in a heterogeneous series of subjects with thyroid eye disease (TED) treated with teprotumumab.

Methods: Cross-sectional cohort study including patients with clinical diagnosis of TED who was treated with teprotumumab. The entire cohort was analyzed together and subsequently in clinical subgroups based on stage and grade of disease. Read More

View Article and Full-Text PDF
March 2021
Similar Publications

Oculomotor nerve palsy in an asymptomatic child with COVID-19.

Authors:
Marcela R de Oliveira Ana Regina V P Lucena Taciana M M Higino Camila V Ventura

J AAPOS 2021 Mar 6. Epub 2021 Mar 6.

Department of Ophthalmology, Altino Ventura Foundation, Recife, Pernambuco, Brazil; Department of Research, Altino Ventura Foundation, Recife, PE, Brazil; Department of Ophthalmology, HOPE Eye Hospital, Recife, Pernambuco, Brazil. Electronic address:

We report the case of a 2-year-old girl with acute-onset divergent strabismus and ptosis in the right eye. She had an exotropia of 45 for near, eyelid ptosis affecting the visual axis, adduction, limitations of up- and downgaze, and a discrete mydriasis in the right eye. Neurological conditions were ruled out. Read More

View Article and Full-Text PDF
March 2021
Similar Publications

Quality of life and functional vision across pediatric eye conditions assessed using the PedEyeQ.

Authors:
David A Leske Sarah R Hatt Suzanne M Wernimont Yolanda S Castañeda Christina S Cheng-Patel Laura Liebermann Eileen E Birch Jonathan M Holmes

J AAPOS 2021 Feb 16. Epub 2021 Feb 16.

Department of Ophthalmology, Mayo Clinic, Rochester, Minnesota; Department of Ophthalmology and Vision Science, University of Arizona-Tucson. Electronic address:

Purpose: To evaluate eye-related quality of life (ER-QOL) and functional vision across a wide range of pediatric eye conditions, using the Pediatric Eye Questionnaires (PedEyeQ).

Methods: A total of 1,037 children with an eye condition and 254 visually normal controls, across 0-4, 5-11, and 12-17 years age groups, completed the following questionnaires: Child PedEyeQ (Functional Vision, Bothered by Eyes/Vision, Social, Frustration/Worry domains), Proxy PedEyeQ (same domains plus Eye Care), and Parent PedEyeQ (Impact on Parent and Family, Worry about Child's Eye Condition, Worry about Child's Self-perception and Interactions, and Worry about Functional Vision domains). The primary eye condition was classified as amblyopia (n = 171), cataract (n = 99), cerebral visual impairment (CVI; n = 50), cornea (n = 20), eyelid (n = 35), glaucoma (n = 24), nystagmus (n = 57), orbital (n = 19), pupil/iris (n = 7), refractive error (n = 119), retina (n = 82), strabismus (n = 332), and uveitis (n = 22). Read More

View Article and Full-Text PDF
February 2021
Similar Publications
© 2021 PubFacts.
  • About PubFacts
  • Privacy Policy
  • Sitemap