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Table 4 Screening Protocol

From: Five regions, five retinopathy screening programmes: a systematic review of how Portugal addresses the challenge

 

North

Central

LVT

Alentejo

Algarve

Screening method - colour fundus photography

Yes

Yes

Yes

Yes

Yes

Electronic transfer of images

Yes

Yes

Yes

Yes

Yes

Retinografers location

Portable

Portable s

Non-portable - ACES

U

Hospital

Pupil dilatation

No

No

No

No

No

Calls to the target population through postal invitations

Yes

Yes

Yes

Yes

Yes

Who performs the photography

Orthoptic technicians provided by hospitals

Orthoptic technicians provided by hospitals

Primary Health Centres orthoptists

U

Hospital Orthoptic technicians

Software for automatic readings

No

Yes

Yes

No

No

Camara Device

Non-mydriatic camera, CR-2 Digital Retinal Camera (Canon)

Nonmydriatic cameras – Canon CR6-45NM with a Sony DXC-950P 3CCD colour video camera

Non-mydriatic camera, CR-2 Digital Retinal Camera (Canon)

U

U

Screening test procedure

Retinography of both retinal fields, both with 45° field, one focusing on the macula and the other on the optic nerve

Retinography of both retinal fields, both with 45° field, one focusing on the macula and the other on the optic nerve. When impossible to obtain an image with minimum quality is performed an iatrogenic pupil dilation with a topical mydriatic.

Retinography of both retinal fields, both with 45° field, one focusing on the macula and the other on the optic nerve

U

U

  1. U Unavailable