2011-2012 Basic and Clinical Science Course, Section 13: by Christopher J. Rapuano MD

By Christopher J. Rapuano MD

This up to date quantity covers a couple of issues, from the technology of refractive surgical procedure to accommodative and nonaccommodative remedy of presbyopia, from sufferer review to foreign views. It examines particular approaches in refractive surgical procedure, in addition to refractive surgical procedure in ocular and systemic sickness. significant revision 2011-2012.

Show description

Read Online or Download 2011-2012 Basic and Clinical Science Course, Section 13: Refractive Surgery (Basic & Clinical Science Course) PDF

Similar ophthalmology books

HANDBOOK OF GLAUCOMA

Offers sensible medical information regarding the administration of this ailment. Covers crucial scientific manifestations, diagnostic applied sciences and healing modalities, and reports fresh advancements within the pathogenesis and administration of glaucoma.

Pediatric Ophthalmology, Neuro-Ophthalmology, Genetics

This beautifully established textual content is designed for sensible ease of use. fast and straightforward to learn, it bridges the space among fundamental literature and day-by-day perform during this really expert box. Neuro-ophthalmology encompasses lesions of either the afferent and efferent pathways, that could consequence from quite a few etiologies, together with tumoral, paraneoplastic, vascular, inflammatory, infectious, or hereditary – simply to identify a couple of.

Mastering corneal collagen cross linking techniques

Written by means of the main experts from all over the world, this complete color textual content describes and punctiliously illustrates state of the art diagnostic and remedy modalities for the cornea and refractive surgical procedure specifically. - offers specific discussions and professional advice on visible rehabilitation with corneal collagen cross-linking.

Oculoplastic surgery: the essentials

Drawing at the services of a multidisciplinary group of specialists, this designated textual content systematically covers the 3 significant branches of oculoplastic surgical procedure - normal, aesthetic, and orbital illnesses - in a concise layout that makes a speciality of merely the main suitable, must-know details. filled with hundreds and hundreds of full-color illustrations, Oculoplastic surgical procedure: The necessities presents readers with simply available descriptions of key recommendations and systems.

Extra resources for 2011-2012 Basic and Clinical Science Course, Section 13: Refractive Surgery (Basic & Clinical Science Course)

Example text

Broad -beam lasers and some scanning-slit lasers require a mechanical iris diaphragm or ablatable mask to create the desired shape in the cornea, while the rest of the scanning-slit lasers and the flying spot lase rs use a pattern projected onto the surface to guide the ablation profile without masking. The majority of excimer lasers in clinical use today utilize some form of variable or flying spot ablation profile. Wavefront-optimized and wavefront-guided laser ablations Because conventional laser treatment profiles have small blend zones and create a more oblate corneal shape postoperatively, they are likely to induce some degree of higher-order aberration, especially spherical aberration and coma.

Surgeons should be wary of progressive myopia due to nuclear sclerosis. Patients with mild lens changes that are visually insignificant should be informed of these findings and advised that the changes may become more significant in the future, independent of refractive surgery. They should also be told that [OL power calculations are not as accurate when performed after keratorefractive surgery. In patients with moderate lens opacities, cataract extraction may be the best form of refractive surgery.

Some surgeons use wavefront analysis to document levels of preoperative higher-order aberrations. Refraction data from the wavefront analysis unit can also be used to refine the manifest refraction. If the manifest refraction and the wavefront analysis refraction are very dissimilar, the patient may not be a good candidate for wavefront treatment. Note that a custom wavefront ablation generally removes more tissue than a standard ablation in the same eye. Calculation of Residual Stromal Bed Thickness After LASIK A lamellar laser refractive procedure such as LASIK involves creation of a corneal flap, ablation of the stromal bed, and replacem ent of the flap.

Download PDF sample

Rated 4.54 of 5 – based on 41 votes