The relationship between capsulorhexis size and anterior chamber depth relation

Area of Science:

• Ophthalmology
• Surgical Techniques
• Intraocular Lens Implantation

Background:

• Cataract surgery involves phacoemulsification and intraocular lens (IOL) implantation.
• The capsulorhexis, an opening in the lens capsule, is a critical step in cataract surgery.
• The size of the capsulorhexis may influence postoperative outcomes.

Purpose of the Study:

• To investigate the effect of capsulorhexis diameter on anterior chamber depth (ACD) after phacoemulsification.
• To compare the impact of 4 mm versus 6 mm capsulorhexis on postoperative ACD and refractive error.

Main Methods:

• Fifty-one patients underwent phacoemulsification with IOL implantation, with either 4 mm or 6 mm capsulorhexis.
• Anterior chamber depth (ACD) and axial length (AL) were measured preoperatively and postoperatively up to 90 days.
• Ultrasonography was used for ACD and AL measurements.

Main Results:

• A 6 mm capsulorhexis group showed an early significant increase in ACD and ACD/AL ratio on postoperative day 1.
• Both 4 mm and 6 mm capsulorhexis groups demonstrated significant ACD and ACD/AL ratio increases by day 90 compared to preoperative values.
• A statistically significant difference in ACD and ACD/AL ratio was observed between the 4 mm and 6 mm groups at 90 days postoperatively.

Conclusions:

• A 4 mm capsulorhexis results in a longer postoperative anterior chamber depth (ACD) compared to a 6 mm capsulorhexis.
• The findings suggest that capsulorhexis size influences postoperative ACD and potentially refractive outcomes.
• This has implications for IOL selection and surgical planning in cataract surgery.