# Eye Tools

> Ophthalmology calculator suite for IOL calculations, IOP correction, and prescription management. (iPhone/iPad app by Evandro Souza.)

- Source: https://appshunter.io/ios/app/eye-tools/id369811728 (this page in markdown: same URL + `.md`)
- Developer: [Evandro Souza](https://appshunter.io/developer/369811735)
- Category: Medical, Utilities
- Price: $4.99
- Rating: 4.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 17+
- Requires: iOS 6.1 · 16 MB
- Languages: English
- Released: 2010-05-05
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/eye-tools/id369811728/reviews.md

## What is Eye Tools?

Eye Tools is an application for ophthalmologist who need assistance for intraocular lenses calculation, intraocular pressure correction, convert units, vertex distance calculation or transpose cylinder prescriptions.

It has several calculators that are extremely useful:


IOL CALC: 
Calculates the intra ocular lens diopter.
Three most common formulas available.

R-VERGENCE:
Calculates the intra ocular lens diopter based on patient’s refraction.
(Suitable for secondary implant.)

BAG SULCUS: 
Calculates the corresponding lens in the sulcus based on its value in the capsular bag.

IOP-PACH: 
Adjusts the intraocular pressure with respect to cornea pachymetry.

TORIC IOL: 
A powerful calculator for toric lenses.
Allows the surgeon to change the incision location and review the calculations in real time.

CONVERTER: 
Calculates K average and converter units.

VERTEX CALCULATOR: 
Calculates the relationship between prescription glasses and contact lens.

TRANSPOSE CYL.
Calculate the cylinder with the opposite value that was provided (plus or minus notation), as well the spherical equivalent.


The information contained in this application is for educational / reference and simulations purposes and is not intended to replace clinical judgment.


***** IF YOU ARE NOT A OPHTHALMOLOGIST , PROBABLY WILL NOT BE INTERESTED IN THIS APPLICATION! ***** 

***** THIS APPLICATION IS FOR REFERENCE ONLY *****

## Key features

- Intraocular lens diopter calculation
- Intraocular pressure adjustment
- Unit conversion
- Vertex distance calculation
- Cylinder prescription transposition
- Toric lens calculation with real-time review

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/eye-tools/id369811728/reviews.md

### 4/5 — Good calculator

*2010-08-06, version 0*

Very good. But Holladay2 formula is not included. Please upgrade that formula. 

Can I change A cosnstant value 118.0 to 118.4 permanently?

### 5/5 — EyeTools

*2010-05-06, version 0*

Simplesmente perfeito para o cotidiano do oftalmologista!

## Frequently asked questions about Eye Tools

### What is Eye Tools used for?

Eye Tools is a medical application designed for ophthalmologists. It offers specialized calculators for intraocular lens (IOL) calculations, intraocular pressure (IOP) correction based on pachymetry, unit conversions, and cylinder prescription transpositions.

### How much does Eye Tools cost?

Eye Tools is a paid application, priced at $4.99. This one-time purchase grants access to all its features.

### What devices support Eye Tools?

Eye Tools is available for iOS devices, including iPhone, iPad, and iPod. It is designed for use on Apple's mobile operating system.

### Is Eye Tools suitable for all ages?

No, Eye Tools has an age rating of 17+, indicating it is intended for adult users, specifically medical professionals, due to its specialized medical content.

### How often is Eye Tools updated?

The latest version of Eye Tools is 3.2, which was last updated on April 20, 2018. This suggests updates may not be very frequent.

### Does Eye Tools have ads?

The provided data does not indicate the presence of advertisements in Eye Tools. As a paid application, it is likely ad-free.

### What are the key calculators in Eye Tools?

Key calculators include IOL CALC for IOL diopter, R-VERGENCE for IOL based on refraction, BAG SULCUS for sulcus lens calculation, IOP-PACH for IOP adjustment, TORIC IOL for toric lenses, CONVERTER for K average and units, VERTEX CALCULATOR for glasses/contact lens prescription, and TRANSPOSE CYL for cylinder prescription.

### What is the user rating for Eye Tools?

Eye Tools has a user rating of 4.0 stars, based on a single rating. This indicates a generally positive reception from its limited user base.

## Version history (last 1 release)

### 3.2 — 2018-04-20

This app has been updated by Apple to display the Apple Watch app icon.

iOS11 compatibility

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## More apps by Evandro Souza

- [LRI Calc](https://appshunter.io/ios/app/lri-calc/id393310977)
- [IOL Toric Calculator](https://appshunter.io/ios/app/iol-toric-calculator/id424441312)
- [Rule Of Conoid](https://appshunter.io/ios/app/rule-of-conoid/id549151465)
- [Helper Keratoconus](https://appshunter.io/ios/app/helper-keratoconus/id559759718)
- [Best Deal - The easiest and fastest way to compare prices.](https://appshunter.io/ios/app/best-deal-the-easiest-and-fastest-way-to-compare-prices/id608113768)

All apps by Evandro Souza: https://appshunter.io/developer/369811735

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*