iChart2000

Thomson Software Solutions are the leading provider of software for eye care professionals in the UK and have users all over the world. This application joins a family of software for vision assessment and screening originally devised by Professor David Thomson.
iChart2000 exploits the superb graphics capabilities of the iPod Touch or iPhone to provide a wide range of vision assessment tools for eye care professionals (ophthalmologists, optometrists, orthoptists and opticians).
The tools are divided into four categories:
Near vision assessment:

By holding the iPod Touch at a normal reading distance, it can be used to assess a wide range of near vision functions including:

- Reading test (N5 to N18 - Adult and childrenss test)
- LogMAR reading test
- LogMAR near charts
- Task images (Maps, books, newspaper etc. to ensure the patient can perform these real world tasks)
- Binocular vision tests (fixation disparity, binocularity, suppression, steropsis)
- Duochrome (dots, letters, rings)
- Amsler (positive and negative contrast, draw directly on charts)
- Fixation targets (clown, crosses, letters, cartoons)
- Miscellaneous (convergence, astigmatism, maddox rod)

3 metre assessment:

View the iPod Touch from 3 metres and you can assess a wide range of distance vision functions. Ideal for home visits.

- LogMAR charts
- Single letter charts
- Childrens visual acuity (Lea symbols with crowding bars)
- Duochrome (dots, letters, rings)
- Cross cylinder (dots and rings)
- UK number plate test for driving (actual number plate fonts and correct spacing)
- Fixation targets (clown slide show to use during retinoscopy for example)
Patient information:

Wide range of images and videos to help explain conditions to patients. Pan and zoom on all images and draw with your finger.

- Eye diagrams
- Eye disease (photographs of a wide range of anterior segment eye diseases)
- Front of the eye (images of the external eye)
- Retina (normal and abnormal fungi)
- Videos

Toolkit:

Use the toolkit to perform those tricky eye-related calculations.

- Visual acuity (convert between LogMAR, VAR, Snellen metres, Snellen ft, Resolution and Spatial frequency)
- LogMAR scorer (help with scoring a LogMAR chart)
- Vertex distance calculator
- Toric contact lens over-refraction calculator
- Transposition calculator