One of the mysteries of the English language finally explained.
The raised disk on the retina at the point of entry of the optic nerve, lacking visual receptors and so creating a blind spot.
- ‘The optic disc marks the exit point of the retinal nerve fibres from the eye.’
- ‘Visual acuities should be measured and the optic discs examined.’
- ‘Symptoms include floaters and blurred vision caused by swelling of the optic disc and macular edema.’
- ‘The optic disk is where all of the nerve fibers come together at the back of the eye.’
- ‘The tumor did not involve the optic disc or nerve.’
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