The final goal of designing a lens is______. A: to trap the opponent's lenses B: to focus light with lenses C: to hand-make lenses at low cost D: to reflect light by means of curved surfaces

What types of contact lenses are unavailable in the shop?

Which of the following steps to put on contact lenses is incorrect?

Contact lenses belong to Class-III medical devices of medical devices in medicine.

Match the words:contact A: nursing B: test C: lenses D: polish

1802d95b620b298.jpgCelebrities often find it hard to 1)________________ the prying lenses of the paparazzi, a term for photographers who take photos of famous people.

As the conversation begins, what are the man and woman doing A: It focuses automatically. B: It has a lot of specialized lenses. C: It is easy to load. D: It advances the film automatically.

Which of the following is an advantage of glass lenses? A: Good hardness B: Good heat resistance C: Light D: Thin E: Good impact resistance

Which of the following is derived from the ecotoderm? A: epidermis, lenses of eyes, and nervous system B: notochord, skeleton, and skin C: liver, thyroid, and muscles D: blood, respiratory system, and skeleton

The resolution of a microscope refers to () A: Its power to increase an object’s apparent size B: its ability show detail clearly C: its series of interchangeable objective lenses D: its power to scan the surface of an object