Intraocular lens power calculations in the triple procedure.
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چکیده
منابع مشابه
Intraocular lens power calculations in the triple procedure.
When a triple procedure is planned, calculation of the intraocular lens becomes a problem. Postoperative corneal power bears no relation to preoperative power, and the axial length of the globe also changes. A prospective study of 24 keratoplasties revealed a close relationship between postoperative corneal power and donor corneal power. Changes in axial length were found to be too small to pro...
متن کاملTriple procedure; analysis of outcome, refraction, and intraocular lens power calculation.
AIMS A total of 97 triple procedures performed over a 6 year period were studied retrospectively to determine the best approach to calculate intraocular lens power. METHODS The cases were divided into two diagnostic categories. RESULTS After 1 year best corrected visual acuity was 20/40 or better in 37.5% of the cases of the 'modified group'. This group consists of patients with the diagnos...
متن کاملEffect of corneal aberrations on intraocular lens power calculations.
PURPOSE To use ray tracing to determine the influence of corneal aberrations on the prediction of the optimum intraocular lens (IOL) power for implantation in normal eyes and eyes with previous laser in situ keratomileusis (LASIK). SETTING Hospital Universitario Virgen de la Arrixaca, Murcia, Spain. DESIGN Case series. METHODS The optimum IOL power was calculated by ray tracing using a pa...
متن کاملThe triple procedure: in the bag placement versus ciliary sulcus placement of the intraocular lens.
AIMS To evaluate the influence of intraocular lens (IOL) placement on triple procedure clinical results and to investigate whether it is appropriate to use phacoemulsification in patients with large lens nucleus. METHODS 40 consecutive penetrating keratoplasties combined with cataract extraction performed in a single institution were studied. Whenever possible a capsulorhexis was performed an...
متن کاملIntraocular lens calculations after refractive surgery.
PURPOSE To evaluate the effect of refractive surgery on intraocular lens (IOL) power calculation, compare methods of IOL power calculation after refractive surgery, evaluate the effect of pre-refractive surgery refractive error on IOL deviation, review the literature on determining IOL power after refractive surgery, and introduce a formula for IOL calculation for use after refractive surgery f...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1989
ISSN: 0007-1161
DOI: 10.1136/bjo.73.9.709