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Related Concept Videos

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Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
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The muscles of the eye are sophisticated structures that control eye movement and focus, allowing for the precise and rapid adjustments necessary for vision. The human eye is controlled by ten muscles — six extraocular muscles, three intraocular muscles, and one primary eyelid retractor muscle.
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Fascicles are bundles of muscle fibers in a skeletal muscle. Muscle fascicle arrangement is directly associated with the power and range of motion of various muscles. The configuration of these fascicles can vary, leading to different functional outcomes.
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Related Experiment Video

Updated: Sep 12, 2025

Development of an In Vitro Ocular Platform to Test Contact Lenses
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Finger's continuous bipedicle conjunctival flap.

Paul T Finger1,2

  • 1From the Department of Ocular Tumor, Orbital Disease, and Ophthalmic Radiation Therapy, The New York Eye Cancer Center, New York, NY, 10065, USA.

American Journal of Ophthalmology Case Reports
|August 8, 2025
PubMed
Summary
This summary is machine-generated.

A novel "bucket-handle" conjunctival flap technique offers a stable, double-vascularized ocular surface reconstruction for severe corneal conditions. This method provides a robust barrier against conjunctival regrowth, improving visual outcomes.

Keywords:
BipedicleConjunctivaFlapPterygiumTransposition

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Related Experiment Videos

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Area of Science:

  • Ophthalmology
  • Regenerative Medicine

Background:

  • Severe corneal neovascularization and subepithelial fibrosis can compromise vision.
  • Limbal stem cell deficiency contributes to ocular surface instability.

Observation:

  • A case of unilateral, severe corneal neovascularization (270 degrees) with fibrosis and stem cell deficiency was treated.
  • A novel "bucket-handle" bipedicle conjunctival flap technique was employed for ocular surface reconstruction.

Findings:

  • The technique involved mobilizing superior bulbar conjunctiva to cover the corneal defect.
  • A central conjunctival-corneal window allowed for vision, creating a continuous nasal to temporal pedicle flap.
  • The flap provided symmetrical, double-vascularized ocular surface reconstruction.

Implications:

  • The "bucket-handle" flap offers a structurally stable method for complex ocular surface reconstruction.
  • This technique may serve as a reliable barrier against conjunctival regrowth in challenging cases.
  • It presents a promising approach for managing severe corneal pathologies and restoring visual function.