Análise bidimensional computadorizada da fenda palpebral

Translated title of the contribution: Computerized bidimensional analysis of the palpebral fissure

Antonio Augusto V. Cruz, Adriano Baccega

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Purpose: To use digital image processing analysis techniques as a clinical tool for measuring the normal palpebral fissure. Methods: 70 palpebral fissure images of 23 males and 47 females with ages ranging from 10 to 60 years were analyzed. The images were captured with a CCD camera and transferred to a Macintosh computer. Using the NIH software, the following variables were measured: 1) area, 2) length, 3) height and angle between the medial and lateral canthi, 4) upper and lower eyelid curvatures 5) position of the highest point of the upper contour and the lowest point of the lower contour relative to the palpebral fissure midline. Results: The mean values obtained for the length, height and vertical position of the lateral canthus relative to medial canthus agree well with normative values found in the literature. Variables that have never been quantified as the upper and lower eyelid contour and palpebral fissure area were easily measured. Conclusions: The digital image processing is a simple method for the 2-dimensional analysis of the palpebral fissure and allows refined measurements of the fissure morphology.

Translated title of the contributionComputerized bidimensional analysis of the palpebral fissure
Original languagePortuguese
Pages (from-to)13-19
Number of pages7
JournalArquivos brasileiros de oftalmologia
Issue number1
StatePublished - 2001
Externally publishedYes


  • Eyelid diseases/diagnosis
  • Eyelids/anatomy & histology
  • Image processing, computer-assisted

ASJC Scopus subject areas

  • Ophthalmology


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