The international Classification of the Retinopathy of the Precocity (ICROP)

 The system used for featured detection active ROP, is termed the International Classification of the Retinopathy of the Precocity (ICROP). ICROP uses many parameters to feature illness. They - an illness situation in bands (1, 2, and 3), circular expansion of the illness grounded on hours of hours (1-12), gravity of illness (a stage 1-5) and presence or lack of "Plus Illness". Each aspect of classification has a technical definition. This classification was used for main clinical trials. It has been reconsidered in 2005 (2)

 Bands concentrate on an optic nerve. The band 1 is a back band of the retina spotted as a circle with a radial bone, stretched from an optic nerve to double distance to maculae. The band 2 is a ring with interior brovkoj, a certain band 1 and the exterior boundary spotted by a radial bone, spotted as distance from an optic nerve to nasal mouths serrata. The band 3 is a residual temporal half moon of a retina.

 Circular expansion of illness is featured in segments as though the eye vertex was 12 on a dial. For example it would be possible to inform, that there is an illness of a stage 1 within 3 hours of hours from 4 o'clock till 7 o'clock. (Expansion is a little less important since indications of treatment for Early Treatment for ROP (3)),

 Stages feature ophthalmoscopic detection in bond between vascularization and avaskuljarnoj a retina. A stage 1 - a weak line of demarcation. A stage 2 - the raised crest. A stage 3 - extraretinal a sosudisto-fibrous tissue, the Stage 4 - partial amotio of a retina and. A stage 5 - the full amotio of a retina.

 Plus illness features the considerable level of vascular expansion and a tortuosity observed in back setchatochnom a vessel. It reflects blood flow augmentation through a retina.