NCT — Eye Pressure Examination

What is NCT — Eye Pressure Examination?

NCT — Eye Pressure Examination (Non-Contact Tonometry) is an advanced ophthalmic diagnostic method used to evaluate intraocular pressure (IOP). Proper eye pressure is necessary to maintain the eye's spherical shape, but elevated internal pressure can progressively damage the delicate optic nerve fibers — leading to glaucoma and irreversible peripheral vision loss if left undetected.

Common Signs and Symptoms

Symptoms can vary from person to person. If you experience any of the following clinical indicators, an in-person eye examination is advised:

Common Causes and Risk Factors

Diagnosis & Examination Protocol

During the NCT assessment, you sit comfortably facing the instrument with your chin resting on the pad. The machine aligns accurately with your pupil and releases a rapid, gentle puff of air against the cornea. The reflection of light off the flattened corneal surface determines your intraocular pressure in millimeters of mercury (mmHg) within a fraction of a second. There is no needle, no touching of the eyeball, and no need for numbing drops.

Management and Treatment Options

If intraocular pressure is found to be elevated or fluctuating, our ophthalmologists perform a comprehensive optic nerve evaluation, pachymetry (corneal thickness assessment), and visual field testing. Proven treatments include pressure-lowering eye drops and personalized medical management to protect your long-term sight.

When to Seek Immediate Eye Care

Frequently Asked Questions