By I. Howard Fine
ISBN-10: 3540227164
ISBN-13: 9783540227168
Surgeons needs to meet the demanding situations of figuring out and imposing the hot expertise for pseudophakia in the event that they are to experience the arriving demographic tidal wave of child boomers wanting very good imaginative and prescient with no hoping on spectacles. Refractive Lens surgical procedure represents a compilation of the easiest leading edge practices for attaining luck with refractive lens alternate. From getting to know biometry and lens strength calculations in eyes that experience had past keratorefractive surgical procedure to studying the newest micro incision lens extraction thoughts, this renowned workforce of authors will take you step-by-step into the interesting new global of intraocular lens expertise. Refractive Lens surgical procedure will function either a textual content ebook and a reference advisor to this intriguing and quickly growing to be phase of ophthalmology, a useful source that is smart of the myriad new advancements during this box.
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Additional resources for Refractive lens surgery: with 11 tables; [DVD-ROM included]
Sample text
We found that, even in eyes shorter than 20 mm, the anterior segment was completely normal in the majority of cases. Because the axial lengths were so short, the two-variable prediction formulas severely underestimated the ELP, explaining part of the large hyperopic prediction errors with current two-variable prediction formulas. After recognizing this problem, we began to take additional measurements on extremely short and extremely long eyes to determine if the prediction of ELP could be improved by knowing more about the anterior segment.
In 1995, Olsen published a four-variable predictor that used axial length, keratometry, preoperative anterior chamber depth and lens thickness [14]. His results did show improvement over the current two-variable prediction formulas. The explanation is very simple. The more information we have about the anterior segment, the better we can predict the ELP. This explanation is a well-known theorem in prediction theory, where the more variables that can be measured describing an event, the more precisely one can predict the outcome.
1 Introduction The indications for intraocular lens (IOL) implantation following cataract or clear lensectomy have significantly increased. These expanded indications result in more complicated cases such as patients with a scleral buckle, silicone in the vitreous, previous refractive surgery, piggyback IOLs in nanophthalmos, positive and negative secondary piggyback IOLs and specialty lenses, such as multifocal and toric IOLs. Techniques for determining the proper IOL and power are presented. Several measurements of the eye are helpful in determining the appropriate IOL power to achieve a desired refraction.
Refractive lens surgery: with 11 tables; [DVD-ROM included] by I. Howard Fine
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