Visual approaches over smooth water surfaces, snow-covered terrain, or flat desert often are characterized by few peripheral visual cues. These can result in a misperception of height above the surface. Daytime visual approaches with reduced visibility due to fog, rain, smoke, haze or snow can make a runway appear farther away as a result of restricted focal vision. As a consequence, one might get above the correct descent path and when he/she realizes, he/she will correct it by making a steeper approach.