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Technical Note: Pre‐surgical anisometropia influences post‐LASIK binocular mesopic contrast sensitivity function
Author(s) -
Anera Rosario G.,
Jiménez José R.,
Villa César,
RodríguezMarín Francisco,
Gutiérrez Ramón
Publication year - 2007
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.2006.00458.x
Subject(s) - anisometropia , mesopic vision , lasik , medicine , binocular vision , ophthalmology , contrast (vision) , refractive surgery , optometry , visual acuity , cornea , optics , refractive error , retinal , physics , photopic vision
Purpose: To investigate if pre‐surgical anisometropia influences the post‐LASIK binocular mesopic contrast sensitivity function (CSF). Methods: Pre‐ and post‐surgical binocular CSF was measured for 54 patients under mesopic conditions. Data on visual acuity and corneal topography were also obtained. Results: The binocular contrast sensitivity declined significantly ( r = 0.86; p < 0.001) with increasing pre‐surgical anisometropia. Post‐surgical interocular differences in corneal asphericity were also associated with increasing pre‐surgical anisometropia. Conclusions: Pre‐surgical anisometropia may be indicative of a possible significant deterioration of post‐surgical mesopic binocular CSF, and therefore should be taken into account before surgery in analysing the possible disadvantages and limitations of refractive surgery.