Diagnostic Device

Diagnostic Tools

Wishvision provides multiple high-end investigations as part of the pre-procedural assessment. There are currently 16 medical devices in total, measuring 56 parameters.

Pre-procedural assessment is very important for ensuring a good visual outcome. Wishvision provides a 2.5h consultation to assess an individual's suitability for surgery.

Vision Assessment


Measures subjective visual acuity and best corrected visual acuity. A manifest refraction test.


Measures the refractive power of your eyes. Checks for myopia, hyperopia and astigmatism.

HDR-9000(Huvitz) Digital refractor

Measures subjective visual acuity, including "best corrected visual acuity," which correlates to your potential post-operative visual acuity.


Auto Lensmeter. Measures the refraction of prescription glasses. We use the your current prescription ( to help guide us in planning individualised refractive surgery.

Corneal Examination

Osmolarity Test(TearLab)

Replaces the traditional (and uncomfortable) Schirmer's test. A small sample of tear is collected from the corner of each eye and tested for salt content. Provides an objective measurement for diagnosis of dry eyes.


Measures corneal endothelium cell size, shape and density. The endothelium is important for providing nutrients to the rest of the cornea. A healthy endothelium is vital for a good post-operative outcome.

Scout (Schwind) Corneal Wavefront Analyzer

With its placido technology and very high 1 µm resolution, it detects even the smallest irregularities of the cornea. The Corneal Wavefront Analyzer can also analyse multiple images from a series and help select the best image quality for treatment planning. An integrated pupillometry function measures the pupil diameter under both scotopic and photopic light conditions.

Peramis (Schwind)

In a single step, this combination topograph and aberrometer analyses the optical characteristics of the cornea and the entire eye. Static cyclotorsion information for more precise treatment results

OCT(Optovue)-with RTVue XR Angio+ETM Fundus tomography

An infrared scan creates a detailed image of the fundus, allowing us to evaluate the health status of the retina. Corneal epithelial thickness mapping - Individuals need to have sufficiently thick corneal epitheliums to be appropriate for Smart TransPRK.

900-BQ (Haag-Streit)

Slit-lamp examination by the ophthalmologist to assess the cornea and retina.

Lens Examination


Measures eye pressure – intraocular pressure (IOP).


Provides reliable surface data for refractive surgery. The G4 integrates Placido disc topography and Dual Scheimflug topography, allowing for complete analysis of both anterior and posterior corneal surfaces.


Optical biometer. Provides highly accurate measurements for every section of the eye − from the cornea to the retina. The LS900 captures the pupil size, which aids in the assessment for suitability, as well as planning for surgery.


A combination aberrometer/topographer. Distinguishes between aberrations caused by cornea verses lens

Retinal Examination

CR-2 AF(Canon)

Retinal camera. Captures high definition image of retinal structures.


Examines the visual field for defects, as they will adversely affect post-operative visual quality. Visual field defects may also be a sign on early glaucoma.


Slit-lamp examination by the ophthalmologist to assess the cornea and retina.