"cumulativeVA" function. Cumulative visual acuity in Laser and Cataract Surgery

This function computes the mean (standard deviation) and the median (interquartile range) of a matrix that contains visual acuity results from laser refractive surgery or cataract surgery with intraocular lenses. Computes the standard plot for the Journal of Refractive Surgery in order to report the Efficacy results of the procedure.

The cumulative percentage of visual acuity is one of the standard plots for reporting the results of a cataract surgery procedure with intraocular lenses or a laser refractive surgery procedure.

This function calculates the standardized graph from a matrix of data of two columns whose content will depend on the procedure that we want to analyze. For example, if we want to analyze the results after a cataract procedure, the two-column matrix should contain the visual acuity without correction after surgery in the first column and the visual acuity with correction after surgery in the second one, each row representing the results of a subject. In the case of a laser surgery procedure, the first column will contain the visual acuity without correction after the procedure and the second column the visual acuity with correction before the surgery.

In the case of procedures with multifocal intraocular lenses, the function allows to modify the labels depending on whether the data entered correspond to results of far visual acuity, intermediate or near.

Examples:

Cataract surgery:

  • [stat1, stat2]=cumulativeVA(VA,1,'en','C','far'); Computes the figure for 1 month after cataract surgery for visual acuity at far distance.
  • [stat1, stat2]=cumulativeVA(VA,1,'en','C','intermediate'); Computes the figure for 1 month after cataract surgery for visual acuity at intermediate distance.
  • [stat1, stat2]=cumulativeVA(VA,1,'en','C','near'); Computes the figure for 1 month after cataract surgery for visual acuity at near distance.

Laser refractive surgery:

  • [stat1, stat2]=cumulativeVA(VA,1,'es','L','far'); Computes the figure for 1 month after laser refractive surgery for visual acuity at far distance.

Below you have the help of the function. For more information about "refractiveAnalysis" Toolbox please Contact the author

%   Computes the Efficacy of a Cataract or Laser Refractive surgery procedure by means of the cumulative percentage of eyes
%
%   DESCRIPTION
%
%   Computes the Figure A from the standard of the JRS 
%   Reinstein DZ, Archer TJ, Srinivasan S, et al. Standard for Reporting Refractive Outcomes of Intraocular Lens–Based Refractive Surgery. J Refract Surg. 2017; 33: 218–22. 
%   Reinstein DZ, Archer TJ, Randleman JB. JRS Standard for Reporting Astigmatism Outcomes of Refractive Surgery. J Refract Surg. 2014; 30: 654–9. 
%
%   PARAMETERS
%   
%   VA          Two columns matrix
%               In Catarat Surgery with IOLs [PostOp UDVA, PostOp CDVA]
%               In Laser Refractive Surgery [PostOp UDVA, PreOp CDVA]
%      
%   month       Number of months after surgery
%      
%   language    Language for the labels 'es' for Spanish or 'en' for English
%
%   procedure   'C' for cataract surgery and 'L' for laser refractive
%               surgery
%
%   distance    'far','intermediate','near'
%
%   RETURN
%
%   stat1     stat1=[mean, standard deviation, median, interquartile range]
%             for first column
%   stat2     stat1=[mean, standard deviation, median, interquartile range]
%             for second column
%
%
%   EXAMPLE
%
%   [stat1, stat2]=cumulativeVA(VA,1,'es','C','far')
%
%   VERSION
%   
%   1.0.0

Referencias

  1. Reinstein DZ, Archer TJ, Srinivasan S, et al. Standard for Reporting Refractive Outcomes of Intraocular Lens–Based Refractive Surgery. J Refract Surg. 2017; 33: 218–22.
  2. Reinstein DZ, Archer TJ, Randleman JB. JRS Standard for Reporting Astigmatism Outcomes of Refractive Surgery. J Refract Surg. 2014; 30: 654–9.