Overview of ODM
| Property | Description |
|---|---|
| Active Ingredients | Sodium Chloride and Sodium Hyaluronate |
| Form | Ophthalmic solution (Eye drops) |
| Pharmacological Class | Hyperosmolar Agent and Ophthalmic Lubricant |
| Common Use Principle | Managing corneal fluid and lubrication |
| Formulation Note | Typically preservative-free |
What Type of Ophthalmic Preparation is ODM?
The ODM preparation is a specialized ophthalmic solution classified as a combination product that functions as both a Hyperosmolar Agent and an Ophthalmic Lubricant. Its identity is defined by the inclusion of two primary functional ingredients: the inorganic salt Sodium Chloride and the natural polymer derivative Sodium Hyaluronate. As a hypertonic salt solution, its action focuses on osmotic fluid regulation rather than systemic biochemical effects.
Sodium Chloride has an established use as a hypertonic agent in ophthalmology, leveraging osmosis to manage tissue swelling. The application of Sodium Chloride in this context confirms that the solution's core function is physically driven, aiming to draw excess water out of the eye's tissues. The preparation is frequently distributed as a Medical Device in many regions, emphasizing its physical mechanism over drug interaction, a key differentiating factor.
Composition and Formulation: Understanding the Dual Action
The solution's composition features the osmotic agent Sodium Chloride and the viscoelastic substance Sodium Hyaluronate, suspended in a sterile, aqueous vehicle. The roles are complementary: the hypertonic concentration of Sodium Chloride creates the gradient for fluid withdrawal, while Sodium Hyaluronate acts as a film-forming layer.
The inclusion of Sodium Hyaluronate in the solution's design enhances ocular surface healing and retention properties. Sodium Hyaluronate serves as a lubricating agent in ophthalmic formulations due to its retention and viscosity properties. Furthermore, the solution is typically formulated to be preservative-free, a characteristic intended to minimize potential irritation to sensitive ocular tissues, making it suitable for long-term supportive care.
General Purpose: How ODM Manages Corneal Fluid
The overall purpose of ODM is to manage and correct the water retention in the cornea through osmotic fluid regulation, which aids in restoring clarity and surface comfort. This action addresses the physical consequence of excess water accumulation in corneal tissues. By utilizing the principles of hyperosmolarity, the preparation physically draws excess fluid out of the swollen corneal tissue. This action helps the cornea return to its normal, thinner, and more transparent state, supporting overall visual quality. A typical neutral scenario for this preparation involves supporting the restoration of normal corneal hydration.
Regulatory References

