The EUREQUO database (I quote from their website) provides a means to audit surgical results and encourages surgeons to make adjustments to their techniques and improve their outcomes. One important use of the database is benchmarking. EUREQUO is funded by ESCRS. The study The European registry of quality outcomes for cataract and refractive surgery (EUREQUO): a database study of trends in volumes, surgical techniques and outcomes of refractive surgery is based on it and there are several tables. I will make two graphics from the first two tables.

The first one is Number of refractive procedures (eyes), reported into the database, between February 4th 2004 and June 30th 2014umber of refractive procedures (eyes), reported into the database, between February 4th 2004 and June 30th 2014. Well to put the percentages by procedure in a graphic is really straight forward:

 

eurequo1

 

The number of eyes is different from the one reported in the study of 27339 but 26598 is the number of procedures I get by adding all the number of procedures from the table.

The second table is Type of (primary) procedure, indication, mean age and range of preoperative refraction. This one is more interesting since it gives procedure, indication, mean age at surgery, maximum and mean refraction preop by indication and number of eyes. Now, leaving aside mean age at surgery I will show you all the other data in a single graphic:

 

eurequo2

 

Each bar shows the range, the bar width is proportional to the number of eyes, and the vertical lines are the mean refraction for that bar, that means that for PRK for myopes the mean is -3.2 D and for the hyperopes +1.5 and you can see very easy that there are many more myopes than hyperopes for PRK (3693 myopes and 308 hyperopes from the table). We can also see that although for lasik and hyperopes the range is larger than for RLE, the mean is smaller.