Topical Dopamine Application on Form-Deprivation Myopia in Rabbits

Area of Science:

• Ophthalmology
• Pharmacology
• Animal Models

Background:

• Myopia, a global vision impairment, necessitates effective interventions.
• Form deprivation (FD) myopia is a common animal model for studying myopia progression.
• Investigating novel therapeutic agents for myopia control is crucial.

Purpose of the Study:

• To evaluate the efficacy of topical dopamine in inhibiting FD myopia in a rabbit model.
• To assess the safety profile of topical dopamine administration on ocular tissues.

Main Methods:

• Neonatal New Zealand white rabbits were used, with FD myopia induced in one eye.
• The treatment group received topical 4% dopamine, while the control group received saline daily for four weeks.
• Axial length was measured, and histological analysis assessed retinal safety.

Main Results:

• Dopamine treatment significantly reduced axial elongation in FD eyes (15.07 ± 0.34 mm) compared to controls (15.63 ± 0.33 mm, p=0.015).
• Histological examination revealed no retinal structural alterations or apoptosis, indicating safety.
• Topical dopamine demonstrated significant efficacy in inhibiting myopia progression.

Conclusions:

• Topical dopamine is a promising therapeutic strategy for controlling myopia progression.
• The study supports dopamine's potential in managing myopia without ocular toxicity.
• Further clinical research is warranted to explore dopamine's application in human myopia.