Eyeglasses are an essential accessory for those with vision problems. They not only improve vision but also contribute to fashion and style. But how many types of eyeglasses are there? Let's find out.

1. Single Vision Eyeglasses:
   These are standard eyeglasses with one prescription over the entire lens. They are used to correct one type of vision impairment such as nearsightedness or farsightedness.

2. Bifocal Eyeglasses:
   Bifocal eyeglasses have two prescriptions in one lens. This allows individuals to see both near and far distances. The prescriptions are divided by a visible line across the lens.

3. Trifocal Eyeglasses:
   Trifocal eyeglasses have three prescriptions in one lens. They correct near, intermediate and far distances. The lens is divided into three sections with two visible lines.

4. Progressive Eyeglasses:
   Progressive eyeglasses are similar to trifocal lens but provide a better transition between the prescriptions with no visible lines. They correct near, intermediate and far distances.

5. Computer Glasses:
   Computer glasses are designed to reduce eye strain caused by looking at computer screens for a long time. They are adjusted to the distance between the eyes and the computer screen.

6. Sports Glasses:
   Sports glasses are designed to be shatterproof and protect the eyes from injury. They are ideal for individuals who engage in sports activities.

7. Safety Glasses:
   Safety glasses also protect the eyes from injury in dangerous work environments. They are designed to be shatterproof and scratch-resistant.

In conclusion, there are several different types of eyeglasses available to choose from. It's important to consult with an eye doctor to determine which type is right for an individual's specific needs. With the right pair of glasses, an individual can enjoy better vision and even improve their fashion and style.