The tear film covering the cornea consists of lipid, water, and mucin produced by various secretory glands. Dysfunctioning of lacrimal and meibomian glands affects tear film stability and cornea smoothness, resulting in dry eye disease.
To measure cornea and tear smoothness, position an anesthetized autoimmune rat model under a stereomicroscope equipped with a ring illuminator featuring evenly spaced LED lights encircling the objective lens.
Moisten the ocular surface with saline and spread it evenly for accurate smoothness assessment.
Focus the ring illuminator on the cornea's center, generating an illuminator ring image with two circular rows of dots.
In the unaffected control rat, the illuminator ring image on the ocular surface is round with evenly spaced dots, indicating a smooth cornea with a stable tear film.
Conversely, the distorted image of an autoimmune rat model indicates reduced corneal smoothness and unstable tear film, confirming dry eye disease.
Intense Pulsed Light for the Treatment of Dry Eye Owing to Meibomian Gland Dysfunction
A Rabbit Model of Aqueous-Deficient Dry Eye Disease Induced by Concanavalin A Injection into the Lacrimal Glands: Application to Drug Efficacy Studies
Establishment of a Severe Dry Eye Model Using Complete Dacryoadenectomy in Rabbits
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