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Paper Information

Journal:   BINA   Fall 2002 , Volume 8 , Number 1; Page(s) 33 To 40.
 
Paper: 

POTENTIAL ACUITY PINHOLE VS MODIFIED ILLUMINATED NEAR CARD IN PREDICTION OF FINAL VISUAL ACUITY IN PATIENTS WITH CATARACT

 
 
Author(s):  HASHEMI M., DOROUDGAR F., NOURI MAHDAVI KIA, SOLTAN SANJARI M.
 
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Abstract: 

Purpose: To evaluate the power of two methods of potential acuity pinhole (PAP) and illuminated near card (INC) in prediction of final visual acuity after cataract surgery.
Materials and Methods: This sequential double blind cross-over clinical trial was performed on 100 eyes of 100 patients. The patients were classified into 3 groups in terms of best corrected visual acuity (BCVA): I-BCVA ≥ 20/50, II-BCVA of 20/60-20/200, and III-BCVA of less than 20/200 to a minimum of 20/400. Potential visual acuity with the two methods (PAP and INC) was predicted before surgery. Eight weeks after cataract surgery, far BCVA was evaluated and the two methods were compared.
Results: Mean age of the patients was 65 years (range 30-90). Prediction power of PAP test in groups I, II, and III was 75%, 91.7%, and 73.6%, respectively. Prediction power of INC test in groups I, II, and III was 75%, 87.5%, and 80.6%, respectively. Linear relationship between PAP and post operative far BCVA (R) was 0.71 and far INC was 0.51 (regression analysis, P<0.0001). Linear relationship of PAP method and post operative far BCVA in INC method were: Far Log n = -0.12+0.52 PAP Log n and Far Log n = -0.267+0.44 INC Log n, respectively.
Conclusion: Prediction powers for visual acuity in PAP test and INC test were nearly equal. Not considering the preoperative BCVA, both methods had the required power for prediction of visual acuity.

 
Keyword(s): POTENTIAL ACUITY PINHOLE, ILLUMINATED NEAR CARD, POTENTIAL VISUAL ACUITY, BEST CORRECTED VISUAL ACUITY
 
References: 
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