<unk>  is essential for other<unk>  surgeries such as Limbal Relaxing Incisions. LRI is used to reduce<unk>  astigmatism by placing a pair of incisions of a particular depth and arc length at a steep axis of<unk>  astigmatism. By using the<unk>  the surgeon will reduce the chances of perforation of the eye and improves surgical outcome. Newer generations of pachymeters will help surgeons by providing graphical surgical plans to eliminate astigmatism. Prior to cataract surgery, it is also important to measure<unk>  to detect a condition known as Fuch’s<unk>  Endothelial Dystrophy. In this condition, the<unk> is thickened due to Oedema (swelling) because it cannot pump out enough of the aqueous (water). This is because there has been a loss of endothelial cells lining the<unk>  internal back surface. Cataract surgery could cause further damage to the<unk> and potentially lead to sight loss in such patients.<unk>  is also considered an important test in the early detection of glaucoma. In 2002, the five-year report of the Ocular Hypertension Study (OHTS) was released. The study reported that<unk>  thickness as measured by<unk>  was an accurate predictor of glaucoma development when combined with standard measurements of intraocular pressure. As a result of this study and others that followed,<unk>  is now widely used by both glaucoma researchers and glaucoma specialists to better diagnose and detect early cases. Newer generation pachymeters have the ability to adjust the intraocular pressure that is measured according to the<unk>  thickness. Tonometers have to make an assumption of the patient’s<unk>  thickness when measuring the eye’s IOP (intra ocular pressure). If the patient’s real<unk>  thickness is a lot different, the accuracy of the measured results will be incorrect and the true intra ocular pressure may be much different. Also, it’s postulated that patients with thinner<unk>  are at higher risk of developing glaucoma.
Corneal pachymetry
Corneal topography
Scanning laser ophthalmoscopy
Doppler optical coherence tomography
Retinal birefringence scanning
Optical coherence tomography
Scanning laser polarimetry
Eye testing using speckle