Page 97 - Pharmaceutics IV (02-06-01305)
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Ophthalmic DD: Introduction
Anatomy & physiology
Structure composition
• Vascular tunic:
It consists of the iris (pigmented layer), ciliary body, and
choroid
• Nervous tunic: the retina
• Other internal components of the eye include the lens,
aqueous humor, and vitreous humor.
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Ophthalmic DD: Introduction
Anatomy & physiology
Fluid composition
Aqueous Humor:
• It is a clear fluid hosted in the anterior and posterior chambers
• It is composed mainly of water, glucose and amino acids.
Vitreous Humor:
• It is a gel-like material occupying the space between the lens and
the retina.
• The close proximity of the vitreous to the retina and choroid makes
it a direct place for drug delivery to the posterior tissues.
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Salma E. EL-Habashy 94
