Related Experiment Video
Updated: Aug 8, 2026
05:22
Iris Fixation via External Pentagram Suturing
Published on: May 5, 2022
Outcome of phacoemulsification after pars plana vitrectomy
Margaret A Chang1, Michael K Parides, Stanley Chang
1Department of Ophthalmology, College of Physicians and Surgeons, Columbia University, New York, New York, USA.
Ophthalmology
|May 3, 2002
Summary
Phacoemulsification surgery after pars plana vitrectomy (PPV) yields good visual acuity, with similar complication rates to those without prior PPV. Retinal comorbidity is the main visual limitation.
Area of Science:
- Ophthalmology
- Surgical Outcomes
- Retinal Surgery
Background:
- Phacoemulsification is a common cataract surgery technique.
- Pars plana vitrectomy (PPV) is a surgical procedure to treat various retinal conditions.
- The visual outcomes and complication rates of phacoemulsification in patients with prior PPV are not well-established.
Purpose of the Study:
- To compare the outcomes of phacoemulsification surgery in patients who have undergone prior pars plana vitrectomy (PPV) versus those who have not.
- To assess differences in visual acuity, intraoperative difficulties, and postoperative complications between the two groups.
Main Methods:
- Retrospective cohort study comparing 31 eyes with prior PPV and 116 eyes without.
- Data collected included pre- and post-operative best-corrected visual acuity (BCVA), cataract type, intraoperative difficulties, and postoperative complications.
- Statistical analyses included chi-square tests and logistic regression to adjust for confounding factors.
Main Results:
- Eyes with prior PPV were more likely to have nuclear sclerotic cataracts (P=0.002).
- Post-surgery BCVA of 20/40 or better was achieved in 77.4% of eyes with prior PPV versus 94.8% of controls (not statistically significant after adjustment).
- Intraoperative difficulties (9.7% vs 9.4%) and postoperative complications (3.2% vs 15.5%) were similar between groups, though the latter approached statistical significance (P=0.07).
Conclusions:
- Phacoemulsification is effective in achieving good visual acuity in patients with prior PPV.
- Prior vitrectomy does not significantly increase the risk of intraoperative difficulties or postoperative complications during phacoemulsification.
- Visual outcomes after phacoemulsification in patients with prior PPV are primarily limited by underlying retinal conditions.
Related Concept Videos
01:25Glaucoma: Overview
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
01:28Angle Closure Glaucoma: Treatment
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...