Austin McCormick

                                                  Consultant Ophthalmic and Oculoplastic Surgeon MBChB, FRCOphth

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Clinical Audit of Results
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Dacryocystorhinostomy (Tear Duct Bypass) Surgery for Watery Eyes


Period of audit:                            11/08/08 - 21/09/10

Follow up period:                        50% had greater than 6/12 follow up                         

Total number of operations:      68    

Number of External DCR:         41   

Number of Endonasal DCR:      27 

Overall success rate:                   92% 

External DCR success rate:       89% total success; 96% total + partial success

Endonasal DCR success rate:    96% total success (1 failure)

Complication rate:                      0%  major complications

                                                      14% minor complications (nose bleed, sinusitis) endo

                                                      18% minor complications (nose bleed, scar) external


Gold Standard: Tsirbas A, Davis G, Wormald PJ. Mechanical Endonasal Dacryocystorhinostomy Versus External Dacryocystorhinostomy. Ophthalmic Plastic and Reconstructive Surgery. 20; (1):50-56. Endonasal success rate - 93.5% (31 cases). External success rate - 95.8% (24 cases).


Comments: External DCR results include all cases: Repeat surgery from other centres; nasolacrimal duct obstruction; canalicular stenosis; functional nasolacrimal duct obstruction. The 3 external DCR cases which failed were either canalicular stenosis or functional obstruction - conditions known to have higher failure rates. Excluding these gives a 100% success rate for nasolacrimal duct obstruction cases.

14% (4 cases) of endonasal cases required a nasal septoplasty.

Data was available for analysis in 21/27 endonasal and 28/41 external cases.


Conclusion:  These results compare favourably with published gold standard results in peer reviewed scientific journals.                   




Cataract Surgery


Period of audit:   

Follow up period:                                                   

Total number of operations:           

Number of External DCR:               

Number of Endonasal DCR:           

Overall success rate:                       

External DCR success rate:           

Endonasal DCR success rate:        

Complication rate: 


Gold Standard:


Comments:


Conclusion:                       



Tel: 01517098442                             Fax: 01517097509                                Email:  liverpool.eyesurgeons@virgin.net                               Address:  86 Rodney Street  L1 9AR UK

Clinical Audit of Results