Diagnostic instruments in the optical industry are tools used to assess various aspects of vision and eye health. These instruments aid optometrists and ophthalmologists in diagnosing conditions and determining the appropriate course of treatment. Common diagnostic instruments include:

• Autorefractors: These devices automatically measure a patient’s refractive error, including myopia, hyperopia, and astigmatism, providing a baseline for further examination.
  
  
• Ophthalmoscopes: Ophthalmoscopes are used to examine the interior structures of the eye, including the retina, optic nerve, and blood vessels, allowing for the detection of conditions such as retinal detachment, macular degeneration, and diabetic retinopathy.
  
  
• Slit Lamps: Slit lamps provide a magnified view of the anterior segment of the eye, allowing for detailed examination of the cornea, iris, and lens. They are essential for diagnosing conditions such as cataracts, corneal ulcers, and glaucoma.
  
  
• Tonometers: Tonometry instruments measure intraocular pressure, which is important for diagnosing and monitoring conditions such as glaucoma.