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Related Concept Videos

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Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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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 eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
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Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
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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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In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
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Related Experiment Video

Updated: Jun 24, 2025

In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography
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Foundation models in ophthalmology.

Mark A Chia1,2, Fares Antaki1,2,3, Yukun Zhou1,2

  • 1Institute of Ophthalmology, University College London, London, UK.

The British Journal of Ophthalmology
|June 4, 2024
PubMed
Summary
This summary is machine-generated.

Foundation models are versatile artificial intelligence (AI) tools transforming medicine. This review guides eyecare professionals on using AI foundation models in research and practice, addressing challenges and future steps.

Keywords:
ImagingRetina

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Area of Science:

  • Artificial Intelligence in Medicine
  • Ophthalmology Research
  • Clinical AI Applications

Background:

  • Foundation models represent a significant advancement in artificial intelligence (AI), moving beyond specialized tasks to generalizable applications.
  • Ophthalmology is poised to lead other medical fields in adopting these versatile AI models into clinical practice.
  • Understanding and integrating AI foundation models is crucial for the future of eyecare.

Purpose of the Study:

  • To provide a roadmap for eyecare professionals on understanding AI foundation models.
  • To equip readers with knowledge for exploring foundation models in their research and practice.
  • To review the current state and future potential of foundation models in ophthalmology.

Main Methods:

  • Outlining key concepts and technological advancements enabling foundation models.
  • Reviewing novel training approaches and modern AI architectures.
  • Summarizing existing literature on foundation models in ophthalmology, including vision, language, and multimodal models.

Main Results:

  • Foundation models offer broad applicability across diverse ophthalmology subfields.
  • Progress has been made in vision foundation models, large language models, and large multimodal models.
  • Existing literature highlights the transformative potential of these AI models in eyecare.

Conclusions:

  • AI foundation models present a paradigm shift with vast potential in ophthalmology.
  • Key challenges include data privacy, algorithmic bias, and rigorous clinical validation.
  • Strategic steps are necessary to maximize the benefits of foundation models in clinical practice.