Perceptual distortion in homonymous paracentral scotomas.

Background: Cortical remapping after peripheral or central visual deafferentation alters visual perception, but it is unclear whether such a phenomenon impinges on areas remote from a scotoma. To investigate this question, we studied variations of perceptual spatial distortion in the visual field of patients with homonymous paracentral scotoma.

Methods: Two patients with right inferior homonymous paracentral scotoma were asked to describe their perception of a series of figures showing two isometric vertical lines symmetrically located on either side of a fixation point.

Primary vitrectomy without scleral buckling for pseudophakic rhegmatogenous retinal detachment.

Purpose: To report the anatomic and functional results of primary vitrectomy without scleral buckling for the treatment of pseudophakic rhegmatogenous retinal detachment (PsRD).

Design: Prospective, nonrandomized surgical technique study.

Methods: One hundred eyes of 98 patients with PsRD were operated by vitrectomy alone.

Outcomes of coaxial microincision cataract surgery versus conventional coaxial cataract surgery.

Purpose: To compare the outcomes of coaxial microincision cataract surgery (MICS) with those of conventional coaxial cataract surgery.

Setting: University Eye Clinic, Geneva, Switzerland.

Methods: In a prospective study, 50 eyes of 50 patients with nuclear or corticonuclear cataract (grades 2 to 4 on the Lens Opacities Classification System III) were randomly selected to have cataract extraction through a temporal clear corneal incision using 1 of 2 techniques: coaxial MICS (25 eyes) or conventional coaxial cataract surgery (25 eyes).