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Arq Bras Oftalmol. 2009 Nov-Dec;72(6):771-5.

[Upper and lower eyelid position in different degrees of downgaze and upgaze].

[Article in Portuguese]

Author information

  • 1Departamento de Oftalmologia, Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, SP, Brasil.

Abstract

PURPOSE:

To quantify the relation between eye and eyelids placement in different positions during downgaze and upgaze in healthy subjects.

METHODS:

The position of the eye and eyelids of 10 healthy individuals was quantified by palpebral fissure image processing with NIH Image software. Upper and lower mid-pupil margin distance was measured in 7 positions: -30, -20, -10, 0, +10, +20 and +30 degrees (positive signs correspond to upgaze and negative signs to downgaze) along vertical meridian.

RESULTS:

The upper mid-pupil margin distance decreases in upgaze and even more in downgaze. The lower mid-pupil margin distance increases in upgaze and decreases in downgaze. About the palpebral fissure height, it gets larger in upgaze until 20 degrees and smaller in downgaze.

CONCLUSION:

Our data showed that the interpalpebral fissure height varies with vertical meridian gaze amplitude and that considerations about mid-pupil margin distance must consider the amount of upgaze or downgaze.

PMID:
20098897
[PubMed - indexed for MEDLINE]
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