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Lens slitlamp image grading and nuclear hardness
Author(s) -
BARRAQUER R
Publication year - 2013
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2013.4252.x
Subject(s) - grading (engineering) , medicine , ophthalmology , grading scale , cataract surgery , ultrasound , lens (geology) , optometry , ultrasound biomicroscopy , gonioscopy , surgery , optics , radiology , glaucoma , civil engineering , physics , engineering
Lens slitlamp image grading and nuclear hardness Purpose: To develop a lens nuclear grading system able to predict the hardness or surgical difficulty during cataract surgery. Methods: A 1 to 10 (plus 0) grading of the lens nuclear "density", thus called BCN‐10 was developed based on standardized clinical slit lamp photographs, from complete transparency (0) to a totally black cataract (10). The BCN‐10 scale was tested for intra‐observer and inter‐observer repeatibility, for correlation with forward scattering measurement (C‐Quant) and surgical difficulty (ultrasound time). Results: BCN‐10 grading shows good intraobserver and interobserver repeatibility, good correlation with surgical ultrasound times and fair correlation with forward scattering (glare) measurements. Discussion: Available lens grading systems as the LOCS III do not include the harder grades of cataract, precisely where prediction would help the surgeons. BCN‐10 is a novel and consistent lens nuclear grading system useful to predict the hardness and difficulty that will be encountered during cataract surgery, and to some extent correlates with cataract‐induced glare disability.