Toric Intraocular Lens for Astigmatism Correction in Cataract Patients

Area of Science:

• Ophthalmology
• Biomedical Engineering

Background:

• Cataract surgery often requires correction of pre-existing corneal astigmatism.
• Toric intraocular lenses (IOLs) are designed to address this challenge.

Purpose of the Study:

• To evaluate and compare the clinical outcomes of AcrySof and Hoya toric IOLs.
• To assess their effectiveness in correcting corneal astigmatism during cataract surgery.

Main Methods:

• A comparative study involving 55 eyes of 45 patients with at least 1.00 D corneal astigmatism.
• Phacoemulsification followed by implantation and axis alignment of either AcrySof or Hoya toric IOLs.
• Postoperative assessment of uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), keratometry, manifest refraction, and IOL axis alignment at 6 months.

Main Results:

• Both AcrySof and Hoya toric IOLs demonstrated significant improvements in visual and refractive outcomes (P < 0.05).
• Over 78% of eyes achieved a UDVA of 20/40 or better in both groups.
• No significant differences were observed between the AcrySof and Hoya groups in terms of refractive and visual outcomes or IOL axis rotation.

Conclusions:

• AcrySof and Hoya toric IOL implantation are effective methods for correcting pre-existing corneal astigmatism in patients undergoing cataract surgery.
• Both lens types provide comparable visual and refractive results, offering surgeons reliable options for astigmatism management.