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Table 1 Ingredients and costs for the eye model construction

From: A low cost surrogate eye model for corneal foreign body removal

Materials Quantity Cost (Singapore Dollars) Cost (US Dollars)
Agar powder 3 g 1.10 0.82
Table tennis ball 1, halved 0.10 0.08
Pencil lead shavings 1 g 0.10 0.08
Total cost 1.30 0.98