Format

Send to

Choose Destination
See comment in PubMed Commons below
Eye (Lond). 2011 Oct;25(10):1337-40. doi: 10.1038/eye.2011.170. Epub 2011 Jul 15.

Temporary morphological changes in plus disease induced during contact digital imaging.

Author information

  • 1Retinopathy of Prematurity Clinic, O.P.D. Hospital Civil de Guadalajara, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico. drconsuelo@yahoo.com

Abstract

OBJECTIVE:

To compare and quantify the retinal vascular changes induced by non-intentional pressure contact by digital handheld camera during retinopathy of prematurity (ROP) imaging by means of a computer-based image analysis system, Retinal Image multiScale Analysis.

METHODS:

A set of 10 wide-angle retinal pairs of photographs per patient, who underwent routine ROP examinations, was measured. Vascular trees were matched between 'compression artifact' (absence of the vascular column at the optic nerve) and 'not compression artifact' conditions. Parameters were analyzed using a two-level linear model for each individual parameter for arterioles and venules separately: integrated curvature (IC), diameter (d), and tortuosity index (TI).

RESULTS:

Images affected with compression artifact showed significant vascular d (P<0.01) changes in both arteries and veins, as well as in artery IC (P<0.05). Vascular TI remained unchanged in both groups.

CONCLUSIONS:

Non-adverted corneal pressure with the RetCam lens could compress and decrease intra-arterial diameter or even collapse retinal vessels. Careful attention to technique is essential to avoid absence of the arterial blood column at the optic nerve head that is indicative of increased pressure during imaging.

PMID:
21760627
PMCID:
PMC3194323
DOI:
10.1038/eye.2011.170
[PubMed - indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Nature Publishing Group Icon for PubMed Central
    Loading ...
    Support Center