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Br J Ophthalmol. 1980 February; 64(2): 69–76.
PMCID: PMC1039353

Optic disc neovascularisation in diabetic retinopathy: I. A system for grading proliferation at the optic nerve head in patients with proliferative diabetic retinopathy.


An anatomical taxonomy for neovascular proliferation of the optic nerve head in patients with proliferative diabetic retinopathy is presented. The technique consists in comparing (A) number of involved quadrants, (B) calibre of vessels, (C) neovascular density, (D) neovascular area, (E) plane of proliferation, and (F) fluorescein angiographic findings. A similar taxonomy is used to describe fibrous tissue proliferation at the disc. With these criteria a series of standard photographs have been utilised in a numerical grading system. This system has proved useful in documenting the natural history and response to photocoagulation therapy for diabetic disc neovascularisation.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Lee P, McMeel JW, Schepens CL, Field RA. A new classification of diabetic retinopathy. Am J Ophthalmol. 1966 Aug;62(2):207–219. [PubMed]
  • Kohner EM, Panisset A, Cheng H, Fraser TR. Diabetic retinopathy: new vessels arising from the optic disc. I. Grading system and natural history. Diabetes. 1971 Dec;20(12):816–823. [PubMed]
  • Hercules BL, Gayed II, Lucas SB, Jeacock J. Peripheral retinal ablation in the treatment of proliferative diabetic retinopathy: a three-year interim report of a randomised, controlled study using the argon laser. Br J Ophthalmol. 1977 Sep;61(9):555–563. [PMC free article] [PubMed]

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