Comparison of two intraocular lenses for correction of cylinder power

Completed

Brief Summary: **Purpose:** To compare the efficacy of AT-TORBIplate haptic toric intraocular lens (IOL) (Carl Zeiss Meditec AG, Jena,Germany) and AcrySof loop haptic toricintraocular lens (IOL) (Alcon Laboratories, Inc., Fort Worth, TX) forcorrecting pre-existing astigmatism of â‰¥1dioptres (D) in patients undergoingphacoemulsification and to compare the rotational stability of these two toricIOLs.

**Design:**Prospective randomized controlledtrial.

**Methods** :Forty two eyes of 42 cataractpatients with preexisting astigmatism of 1D or more were randomized to receiveplate haptic toric (AT TORBI) or loop haptic toric (AcrySof) IOL, with 21 ineach group. Post-operative evaluation was done at day 1, 1 week, 1 month and 3months. Uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA)and IOL position were noted in both the groups.

**Results :**At three months post operatively, the mean log MAR UCVA was 0.2 in both thegroups (p =0.7), the mean residualcylindrical refractive error in plate haptic toric group was 0.40 Â± 0.31 D andin loop haptic group was 0.45 Â±0.33 D (p = 0.64). The mean IOLrotation at 3 months follow up in plate haptic group was found to be 3.52 Â±3.84Â° and in loop haptic group was 2.05 Â± 2.56Â° (p = 0.25).

**Conclusion**:Both types of toric IOLs wereequally efficacious for correcting uncorrected visual acuity and pre-existingastigmatism between 1-5 D. Both of them were rotationally stable at 3 monthsfollow up.

Recruitment & Eligibility

Inclusion Criteria

Patients with cataract associated with preoperative regular corneal astigmatism between 1-5 D.

Exclusion Criteria

Patients with irregular astigmatism, corneal dystrophy, tear-film instability, pupillary abnormalities, glaucoma, uveitis, retinal diseases, optic atrophy, or neuro-ophthalmic disease were excluded.
Patients developing intra-operative complications like posterior capsule rent or extension of capsulorhexis or zonular dialysis were also excluded.

Primary Outcome Measures

Name	Time	Method
Uncorrected visual acuity, Best corrected visual acuity (BCVA), Keratometry, IOL position after full mydriasis by masked observer on slit lamp biomicroscope	Postoperatively at 1 week, 1 month and 3 months

Secondary Outcome Measures

Name	Time	Method
A note of complications such as persistent corneal edema, pupillary block, retinal detachment, endophthalmitis and/ or need for neodymium:YAG capsulotomy	Postoperatively at 1 week, 1 month and 3 months

Locations (1): Government Medical College and Hospital
🇮🇳
Chandigarh, CHANDIGARH, India
Government Medical College and Hospital
🇮🇳Chandigarh, CHANDIGARH, India
Rakesh Kumar Bansal
Principal investigator
9646121589
bansalrk@hotmail.com