Question:
What is the Thinnest part of neuro-retinal rim according to ISNT rule ?
What is the Thinnest part of neuro-retinal rim according to ISNT rule ?
Updated On: Jul 9, 2025
- Inferior
- Superficial
- Temporal
- Medial
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The Correct Option is C
Solution and Explanation
The ISNT rule is a useful mnemonic in ophthalmology, primarily used to evaluate the neuro-retinal rim in the optic nerve head. According to this rule, the thickness of the neuro-retinal rim typically follows a specific order:
- Inferior
- Superior
- Nasal
- Temporal
This mnemonic helps in assessing the optic disc for early signs of diseases such as glaucoma. According to the ISNT rule, the temporal part of the neuro-retinal rim is the thinnest. Therefore, the thinnest part of the neuro-retinal rim according to the ISNT rule is:
Temporal
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