Modified Trabeculectomy for Glaucoma Surgery

Assiut University

Status: Unknown

Conditions: IOP Decreased

Treatments: Procedure: MODIFIED TRABECULECTOMY

Study type: Interventional

Funder types: Other

Identifiers

NCT04019210

2323298

Details and patient eligibility

About

A combination of hypotony, flat anterior chamber and choroidal detachment is the most common complications after filtering surgery. The purpose of this study is to present a new modification in standard trabeculectomy technique to reduce such complications.

Full description

Recta-angular scleral flap (one half the scleral thickness) is dissected,reaching 2 mm into the cornea. The dissection through the cornea is carried out with great care, leaving only thin corneal stroma over Descement's membrane.

Application of direct heat cautery using a prob Imm in size (the prob was heated for 45 seconds) the cautery was applied at 4 points two of them just in front of blue corneal line and the other two at 2 mm anterior to the blue line, the diameter of each point is 1 - 1.5 mm. The horizontal distance between each point is 3.5 mm Figure(1). The application of the cautery continue till the color of the tissue becomes brown.

Then with aid of a 23-gauge needle we penetrate these cauterized points to create 4 holes, each of them is nearly 0.3-0.5 mm in length (the opening of each hole takes the shape of a slit). Through one of these holes iridectomy is done.

These holes drain the aqueous under the scleral flap with anatomical preservation of tissue in between.

Close the scleral flap by two 10-0 nylon suture.

Enrollment: 17 estimated patients

Sex: All

Ages: 30 to 62 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• 1ery glacouma

Exclusion criteria

• Previous surgery

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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17 participants in 1 patient group

MODIFIED TRABECULECTOMY

Experimental group

Description:

Recta-angular scleral flap (one half the scleral thickness) is dissected,reaching 2 mm into the cornea. The dissection through the cornea is carried out with great care, leaving only thin corneal stroma over Descement's membrane. Application of direct heat cautery using a prob Imm in size (the prob was heated for 45 seconds) the cautery was applied at 4 points two of them just in front of blue corneal line and the other two at 2 mm anterior to the blue line, the diameter of each point is 1 - 1.5 mm.

Treatment:

Procedure: MODIFIED TRABECULECTOMY