By American Academy of Ophthalmology, James C. Bobrow MD
Experiences the anatomy, body structure, embryology and pathology of the lens. Covers the epidemiology, review and administration of cataracts and provides an outline of lens and cataract surgical procedure, together with precise events. part eleven additionally walks the reader via making a suitable differential analysis and designing a administration plan for intraoperative and postoperative problems of cataract surgery.
Upon crowning glory of part eleven, readers might be capable to:
Identify congenital anomalies of the lens
List different types of congenital and bought cataracts
Describe the organization of cataracts with getting older, trauma, drugs, and systemic and ocular diseases
Describe the review and administration of sufferers with cataract and different lens abnormalities
Read or Download 2014-2015 Basic and Clinical Science Course (BCSC): Section 11: Lens and Cataract PDF
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Extra resources for 2014-2015 Basic and Clinical Science Course (BCSC): Section 11: Lens and Cataract
Other abnormalities associated with PFV include elongated ciliary processes, prominent radial iris vessels, and persistent hyaloid artery. ) Beebe DC. The lens. In: Kaufman PL, Alm A, eds. Adler's Physiology of the Eye: Clinical Application. 10th ed. St Louis: Mosby; 2003:117-158. Goldberg MF. Persistent fetal vasculature (PFV): an integrated interpretation of signs and symptoms associated with persistent hyperplastic primary vitreous (PHPV). LIV Edward Jackson Memorial Lecture. Am J Ophthalmol.
Drugs that relax the ciliary muscle are called cycloplegics. The amplitude of accommodation is the amount of change in the eye's refractive power that is produced by accommodation. It diminishes with age and may be affected Table 2-1 Changes With Accommodation Ciliary muscle action Ciliary ring diameter Zonular tension Lens shape Lens equatorial diameter Axial lens thickness Central anterior lens capsule curvature Central posterior lens capsule curvature Lens dioptric power With Accommodation Without Accommodation Contraction Decreases Decreases More spherical Decreases Increases Steepens Minimal change Increases Relaxation Increases Increases Flatter Increases Decreases Flattens Minimal change Decreases 20 • Lens and Cataract • by some medications and diseases.
Surv Ophthalmol. 1995;39(4):323-334. Young RW Age-Related Cataract. New York: Oxford University Press; 1991. Drug-Induced Lens Changes Corticosteroids Long-term use of corticosteroids may cause PSCs. The incidence of corticosteroid-induced PSCs is related to dose and duration of treatment. Cataract formation has been reported following administration of corticosteroids by several routes: systemic, topical, subconjunctival, and inhaled. The increasing use of high-dose intraocular steroids to treat retinal neovascularization and inflammation has resulted in a substantial rise in the incidence of t 48 • Lens and Cataract • PSCs and of steroid-induced ocular hypertension.
2014-2015 Basic and Clinical Science Course (BCSC): Section 11: Lens and Cataract by American Academy of Ophthalmology, James C. Bobrow MD