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Форум о глазах и зрении
Eye-File retina test results
retina image reading center, ophthalmic expert, retina lesion, macular reflex

How we do retina images exam and mark test results.

Photograph readers (Experts) at the Eye-File Reading Center do an assessment by recognizing pathological marks on the photos presented.

If an expert found some specific conditions that are evident on the photos, such as retinal detachment, scars, pigmentation and vast optic disc excavation your file will be marked with Red.

 If an image has one or more specific signs such as slight pigment clumping, unusual macular reflex, optic disc severe excavation or even some artefacts that are suspicious your image will be graded as Yellow. You will receive a Green band if an expert recognizes that your image looks like a typical eye fundus image.

Your image can also be graded with a Grey mark which means its quality is poor so the expert couldn’t read the image correctly. Depending on the time available, an expert could send you his or her commentary related to the images graded Yellow or Red.

 

Once your image is graded as Green it doesn’t always mean that your eye health is totally unaffected because some eye pathology can not be recognized via the image assessment process.

You have to realize that the eye fundus assessment process is limited to the presented image quality and can not be as specific as binocular stereoscopic examination performed by a doctor. A correct diagnosis can be made only after comprehensive ophthalmic examination.

 

Experts use the following conventions in evaluating the presence and severity of abnormalities:

a) None is used to indicate that a lesion is absent. If there is a suggestion that a lesion may be present, but the reader is less than 50% certain that the lesion is in fact present, the reader uses none, or absent, for that lesion.

b) Questionable is used to indicate the probable presence of the lesion. If the reader is more than 50% certain but less than 90% certain that the lesion is present, he/she selects questionable as the answer. In other words, if the reader thinks that the lesion is present but is unsure that all observers would agree, he/she marks the lesion as questionably present.

When an abnormality is present but the reader is uncertain of its identity, the reader chooses questionable for the lesion considered most likely and answers none, or absent, for the lesion(s) considered less likely.

c) Definite indicates the definite presence of a lesion. If the reader is at least 90% certain that the lesion is present, he/she marks the lesion as definitely present.

d) Cannot grade is used to indicate that the lesion is ungradable due to impaired photographic quality or a confounding condition. In general, if no evidence of the lesion is seen and more than 50% of the subfield is missing or obscured, the reader selects cannot grade rather than none. For focal narrowing and sheathing of arterioles in the quadrants, at least 1 1/2 DD total length of arterioles should be visible in the quadrant; if no abnormality of the arteriole is seen and less than 1 1/2 DD of arterioles are available for assessment, the reader selects cannot grade as the appropriate answer.  

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