Intraocular pressure fluctuations in patients implanted with an implantable collamer lens (ICL V4c). Three-month follow-up.

Introduction: Fluctuating elevated intraocular pressure (IOP) is one of the complications of an implantable collamer lens (ICL), and its alteration is a predictive factor for the development of glaucoma.

Material And Methods: A prospective, cross-sectional analytic study was conducted on patients suitable for ICL implantation. Complete clinical and biometric work-ups were performed, as well as night-time IOP curve, in supine position, with 4 determinations, in order to assess fluctuation, considering abnormal with a value higher than 5 mmHg.

Comparative study of the safety and efficacy of the Ahmed glaucoma valve model M4 (high density porous polyethylene) and the model S2 (polypropylene) in patients with neovascular glaucoma.

Objective: To prospectively evaluate the safety and efficacy of the Ahmed glaucoma valve model M4 (High density porous polyethylene plate; Medpor) compared with the model S2 (polypropylene plate).

Method: Mexican patients with neovascular glaucoma were randomly included for each group (M4 and S2). They were operated on using conventional techniques and creating a sub-episcleral tunnel to place the valve tube in the anterior chamber.

Switching prostaglandin analogues and 24-hour IOP fluctuations.

Objectives: To evaluate the fluctuations in 24h mean intraocular pressure (IOP) when switching prostaglandin analogues in patients with glaucoma.

Methods: Fourteen patients with primary open angle glaucoma were evaluated with monthly 24-hour IOP curves, using a monthly switching pattern of prostaglandin analogues and brinzolamide during 3 years of follow-up.

Results: Average IOP and average fluctuation (peak to through difference) were significantly higher with brinzolamide than with any of the analogues.