Comparison of refractive outcomes in post cataract surgery using measurements from immersion and contact A-scan biometry techniques / Jurnal Sains Kesihatan Malaysia
Malaysian Journal of Health Sciences
;
: 13-18, 2012.
Article
in English
| WPRIM
| ID: wpr-625615
ABSTRACT
It is possible that different techniques used to measure axial length (AL) and anterior chamber depth (ACD) is the cause of discrepancy in refractive outcomes of cataract surgery. This study evaluated the agreement and repeatability of AL and ACD measurements using immersion and contact A-scan biometry techniques and compared the refractive outcomes from both techniques. Twenty four patients were evaluated for agreement and repeatability of AL and ACD measurements using the two different methods. The results were analyzed using Bland and Altman plots. Another 60 patients with age-related cataract were selected to compare the refractive outcomes between both methods. The IOL power was calculated using Sanders- Retzlaff- Kraff- Theoretical (SRK-T) equation. Refraction was determined between four to six weeks postoperatively and the results were analyzed using paired t-test. The results of this study showed good agreement between both techniques was noted with no significant difference detected between measurements (p > 0.05). Significant correlation was found in all parameters (AL r = 0.99; p < 0.01, r = 0.99; p < 0.01) ACD r = 0.91; p < 0.01, r = 0.97; p < 0.01). No significant difference in refractive outcomes of post cataract surgery was detected between the two techniques (p = 0.07). This study concludes that contact A-scan biometry and immersion techniques provide reliable results and should not be the cause of discrepancy in the refractive planned and outcome of cataract surgery.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
English
Journal:
Malaysian Journal of Health Sciences
Year:
2012
Type:
Article
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