Described herein are combination methods, compositions and therapies for treating ophthalmic conditions or diseases arising from, associated with or leading to the overproduction of waste products in the visual cycle. Agents included within these combinations are 13-cis-retinyl derivatives; other agents included within these combinations are selected from vitamins, antioxidants, minerals, inducers of nitric oxide production, anti-inflammatory agents, and negatively-charged phospholipids. Such combination methods may be used as single or multiple administration therapies, or in combination with other agents or therapies.