Localized Peripheral Corneal Densitometry Changes at 1 Month After Laser Posterior Capsulotomy

Area of Science:

• Ophthalmology
• Corneal Science
• Laser Surgery

Background:

• Posterior capsule opacification (PCO) is a common complication after cataract surgery.
• Laser posterior capsulotomy is a standard procedure to restore vision in pseudophakic patients with PCO.
• Evaluating the short-term effects of laser capsulotomy on corneal parameters is crucial for understanding its impact.

Purpose of the Study:

• To assess changes in corneal densitometry, optical aberrations, visual acuity, central corneal thickness, keratometry, and intraocular pressure one month after neodymium:YAG laser posterior capsulotomy.

Main Methods:

• A retrospective, self-controlled observational study analyzed 45 eyes of pseudophakic patients undergoing laser posterior capsulotomy.
• Preoperative and 1-month postoperative examinations included visual acuity, intraocular pressure, keratometry, central corneal thickness, Scheimpflug-based corneal densitometry, and corneal aberration analysis.

Main Results:

• Best-corrected visual acuity significantly improved post-procedure (p < 0.001).
• No significant changes were observed in keratometry, central corneal thickness, intraocular pressure, or corneal aberrations.
• Corneal densitometry showed a significant increase in the anterior, central, posterior, and total layers within the 6-10 mm zone (p < 0.05), but not in other zones.

Conclusions:

• Neodymium:YAG laser posterior capsulotomy effectively improves visual acuity.
• The procedure is associated with a localized, short-term increase in peripheral corneal densitometry (6-10 mm zone) at one month.
• Further prospective studies are needed to determine the clinical relevance and persistence of this densitometric change.