Year : 2019  |  Volume : 27  |  Issue : 2  |  Page : 48-55

Visual Outcome of Phacoemulsification with Multifocal Toric Intraocular Lens Implantation in “With the Rule” and “Against the Rule” Corneal Astigmatism: A Case Series

1 Command Hospital (WC), Chandimandir, Chandigarh, Haryana, India
2 Armed Forces Medical College, Pune, India

Correspondence Address:
Dr. P K Chaturvedi
Command Hospital (WC), Chandimandir, Chandigarh, Haryana
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/njo.njo_10_19

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Phacoemulsification with implantation of multifocal toric intraocular lens (IOL) is now a well-established modality to treat cataract and corneal astigmatism in a single surgical procedure. The visual outcome of these multifocal toric IOLs has been deliberated in this study in corneas with preexisting With the Rule (WTR) and Against the Rule (ATR) astigmatism. Material and Method: Patients of either sex with diagnosed cataract in the age group 40–65 years and preoperative anterior corneal surface astigmatism between ±1.0 D and ±3.0 D suitable to be implanted with multifocal toric IOL were included in this study. The subjects were divided in WTR (n = 17) and ATR (n = 13) groups. After undergoing cataract surgery, their unaided distant visual acuity (UCDVA) and unaided near visual acuity (UCNVA) in log MAR scale were recorded on day 1, 1 week, 4 weeks, 8 weeks, and 12 weeks postoperatively. At 8 weeks and 12 weeks postoperatively, keratometry and refraction readings were also recorded and astigmatism was measured. Observation and Result: Mean UCDVA of both groups together at 4 weeks post-op was 0.088 (SD 0.098). At 8 weeks and 12 weeks postoperative period, the results were similar with mean UCDVA: 0.030 (SD 0.068). UCDVA was significantly better in ATR group group (0.014 ± 0.014) when compared with WTR group (0.042 ± 0.01). UCNVA was 0.33 ± 0.012 for both groups together. In WTR group, mean UCNVA was 0.34 ± 0.08 and in ATR group it was 0.31 ± 0.01 at 12 weeks postoperative period and had no statistically significant difference.

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