Older age as risk factor for deviation from emmetropia in pseudophakia

Area of Science:

• Ophthalmology
• Refractive Surgery
• Biomedical Engineering

Background:

• Cataract surgery aims for emmetropia, but refractive outcomes can vary.
• Understanding risk factors is crucial for optimizing surgical results.

Purpose of the Study:

• To identify risk factors associated with deviations from emmetropia following cataract surgery.
• To analyze the relationship between patient demographics, preoperative measurements, and surgical techniques with postoperative refractive error.

Main Methods:

• Phacoemulsification with in-the-bag intraocular lens (IOL) implantation was performed on 106 patients.
• Postoperative refractive outcomes (spherical equivalent error) were assessed 115 days after surgery.
• Data on patient age, sex, preoperative axial length, keratometry, and incision technique were collected and analyzed.

Main Results:

• Emmetropia was achieved in 15% of cases; 65% required myopic correction.
• Refractive error averaged 0.74 +/- 0.61 diopters (ED), with 77% within 1 ED.
• Older age (over 73 years) was significantly correlated with increased refractive error (p=0.001).
• Clear-cornea incisions were associated with greater astigmatism compared to limbal incisions (p=0.05).

Conclusions:

• Age is a significant risk factor for postoperative refractive error after cataract surgery.
• Older patients may experience greater deviations from the intended emmetropic outcome.
• Surgical technique, specifically incision type, may influence postoperative astigmatism.