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Retinal Pigment Epithelium Transplantation in a Non-human Primate Model for Degenerative Retinal Diseases

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Limited vitrectomy in phacomorphic glaucoma.

Ritika Sachdev¹, Avnindra Gupta¹, Ritesh Narula¹

¹Centre for Sight, New Delhi, India.

Indian Journal of Ophthalmology

|December 7, 2017

Summary

This summary is machine-generated.

Phacomorphic glaucoma surgery is challenging due to shallow anterior chambers. A limited vitrectomy technique safely debulks vitreous and deepens the anterior chamber for safer cataract removal.

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Area of Science:

Ophthalmology
Surgical Techniques
Glaucoma Management

Background:

Phacoemulsification in shallow anterior chambers, such as in phacomorphic glaucoma, presents significant surgical challenges.
Risks include endothelial decompensation, Descemet's detachment, and posterior capsular rents, exacerbated by high vitreous pressure.
High vitreous pressure reduces posterior capsule concavity, increasing the risk of posterior capsular rents during phacoemulsification.

Purpose of the Study:

To describe a novel technique of limited vitrectomy for managing phacoemulsification in eyes with shallow anterior chambers.
To provide a controlled method for vitreous debulking and globe decompression in challenging cataract surgeries.
To facilitate phacoemulsification by deepening the anterior chamber through controlled vitreous removal.

Main Methods:

A small gauge (23-G/25-G) trocar cannula is inserted transconjunctivally.
Liquefied vitreous is allowed to egress through the cannula.
Extraocular vitrectomy is performed until vitreous pressure is reduced, leading to posterior displacement of the iris-lens diaphragm.

Main Results:

The technique effectively debulks vitreous and decompresses the globe in a controlled manner.
Posterior displacement of the iris-lens diaphragm is achieved.
The anterior chamber deepens, creating a safer surgical space for phacoemulsification.

Conclusions:

Limited extraocular vitrectomy is a safe and effective technique for managing shallow anterior chambers during phacoemulsification.
This approach mitigates risks associated with operating in narrow surgical spaces.
The technique facilitates improved visualization and maneuverability for cataract surgeons in challenging cases.