👓 The Perkins tonometer is a handheld, portable device used to measure intraocular pressure (IOP).
- Type: Applanation tonometer, similar to Goldmann tonometer.
- Use: Commonly used in ophthalmology and optometry for glaucoma screening and monitoring.
- How it works: Uses a small probe to gently touch the cornea, measuring IOP.
- Advantages: Portable, easy to use, and provides accurate readings.