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Glaucoma: Overview01:25

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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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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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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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Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
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Related Experiment Video

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Secondary ocular malignancies: A review.

Aaron M Yeung1, Jill R Wells1, Hans E Grossniklaus1

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|January 11, 2021
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Ocular metastases, often spreading to the choroid, now have a better prognosis due to advancements like immunotherapy. Early diagnosis and treatment by ophthalmologists are crucial for preserving vision and coordinating care with oncologists.

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Area of Science:

  • Ophthalmology
  • Oncology
  • Medical Research

Background:

  • Secondary ocular malignancies frequently metastasize to the choroid.
  • Historically, the prognosis for choroidal metastases was poor.
  • Advances in systemic cancer treatment have improved patient life expectancy.

Purpose of the Study:

  • To highlight the importance of timely diagnosis of secondary ocular malignancies.
  • To emphasize the role of ophthalmologists in managing ocular involvement.
  • To underscore the need for multidisciplinary collaboration between ophthalmology and oncology.

Main Methods:

  • Review of current literature on ocular metastases.
  • Analysis of treatment outcomes with newer therapies.
  • Discussion of diagnostic and management strategies.

Main Results:

  • Improved patient survival rates due to systemic therapies and immunotherapy.
  • Potential for vision preservation with prompt ocular treatment.
  • Necessity for integrated care pathways.

Conclusions:

  • Ophthalmologists play a critical role in the early detection and management of choroidal metastases.
  • Multidisciplinary care is essential for optimizing both visual outcomes and systemic cancer treatment.
  • Timely intervention can significantly improve the quality of life for patients with secondary ocular malignancies.