Intraocular pressure, ocular toxicity and neurotoxicity after administration of cannabinol (CBN) or cannabigerol (CBG)
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david 3.9k
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Abstract

Cannabinol (CBN) or cannabigerol (CBG) was administered to cats topically in doses of 250, 500 and 1000 micrograms as a single drop or chronically via osmotic minipumps (20 micrograms hr-1) over a period of 9 days.

While cannabinol had a modest effect on intraocular pressure after a single dose, it caused a more significant reduction in ocular tension during chronic administration. Cannabigerol had similar effects, but the magnitude of response to its chronic administration was greater.

Cannabinol but not cannabigerol caused conjunctival erythema and hyperemia. After systemic administration of cannabinol (20, 40 or 80 mg kg-1) to rats, 8-13 Hz polyspike discharges appeared in the electrocorticogram during wakefulness and during rapid eye movement sleep episodes. Cannabigerol (10, 30 and 100 mg kg-1) lacked this side effect.

These results indicate that chronic administration of these cannabinoids lowers ocular tension considerably. Like marihuana and delta-9-tetrahydrocannabinol, cannabinol produced both ocular toxicity and neurotoxicity. As cannabigerol lacked these toxicities, it appears that the ocular hypotensive effect of this cannabinoid is somewhat dissociable from both the adverse central and ocular effects accompanying marihuana intake.

Intraocular pressure, ocular toxicity and neurotoxicity after administration of cannabinol or cannabigerol - PubMed

Authors: B K Colasanti, C R Craig, R D Allara

iop:intraocular-pressure cannabis • 93 views
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New research continues to show that CBG lowers intraocular pressure.

However, in regard to this statement from the article above:

cannabinol produced both ocular toxicity and neurotoxicity

Please see more research research. For example:

Active ingredient in cannabis protects aging brain cells | Ask FitEyes

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