By American Academy of Ophthalmology, George A. Cioffi MD
Offers a finished dialogue of glaucoma, together with epidemiology and the social and financial affects of the affliction; hereditary and genetic elements; intraocular strain and aqueous humor dynamics; and scientific assessment and surgical remedy. many of the sessions of scientific treatment for glaucoma are defined by way of efficacy, mechanism of motion and defense. comprises a variety of pictures illustrating disorder entities and surgical techniques.
Upon finishing touch of part 10, readers might be capable to:
Identify the epidemiologic gains of glaucoma, together with the social and monetary affects of the disease
Describe the scientific overview of the glaucoma sufferer, together with historical past and common exam, gonioscopy, optic nerve exam, and visible field
Describe the medical positive factors, review, and remedy of basic open-angle glaucoma and normal-tension glaucoma
List many of the scientific beneficial properties of and healing ways for the first and secondary open-angle glaucomas
Read or Download 2014-2015 Basic and Clinical Science Course (BCSC): Section 10: Glaucoma PDF
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Extra resources for 2014-2015 Basic and Clinical Science Course (BCSC): Section 10: Glaucoma
As in the prelaminar region, the larger vessels of the peripapillary choroid may contribute occasional small arterioles to this region, although there is no connection between the peripapillary choriocapillaris and the capillaries of the optic nerve. The retrolaminar region is also supplied by branches from the short posterior ciliary arteries, as well as by the pial arterial branches coursing adjacent to the retrolaminar optic nerve region. The pial arteries originate from both the central retinal artery, before it pierces the retrobulbar optic nerve, and branches of the short posterior ciliary arteries more anteriorly.
Subjects with a corneal thickness of 555 µm or less had a threefold greater risk of developing POAG compared with participants who had a corneal thickness of more than 588 µm. Whether this increased risk of glaucoma is due to underestimating actual IOP in patients with low corneal thickness or whether low corneal thickness is a risk factor independent ofIOP measurement has not been completely determined; but OHTS found CCT to be a risk factor for progression independent of IOP level. Brandt JD.
In general, tonography is best used as a research tool for the investigation of pharmacokinetics and is rarely used clinically. Episcleral Venous Pressure Episcleral venous pressure is relatively stable, except with sudden alterations in body position and with certain diseases of the orbit, the head, and the neck that obstruct venous return to the heart or shunt blood from the arterial to the venous system. The usual range of values is 8-10 mm Hg. The pressure in the episcleral veins can be measured with specialized equipment.