Glaucoma Calc vs Cataract Lens
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Glaucoma Calc
Estimate the 5-year risk of glaucoma development in patients with ocular hypertension. This tool simplifies data entry for multiple perimeters and offers quick calculations on Apple Watch.
- Glaucoma risk estimation
- Ocular hypertension assessment
- Supports Humphrey, Medmont, Octopus perimeters
- Single-screen interface
- Apple Watch app integration
- Independent Apple Watch functionality
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Glaucoma Calc can be used to estimate the risk of a patient with ocular hypertension developing glaucoma within 5 years. The ONLY calculator that lets you enter your field measurements YOUR way. Easy, single-screen interface, for fast decision-making in a busy practice. The original OHTS calculator is still the best. Now with easy entry for both eyes, reducing the workload on your brain. It uses the same calculation data as some other online calculators and electronic single-purpose calculators. However, being on your iPhone means you always have it available at all times. It also has the benefit of having full support for all three major perimeters: Humphrey, Medmont and Octopus. No manual conversion is required. And, being an iPhone application, its really simple to use, everything happens on just one screen, enter your five parameters (Age, IOP, C/D ratio, CCT and PSD/PD/LV) and the glaucoma risk is displayed. Now includes an Apple Watch app that lets you calculate your patients' glaucoma risk without leaving your wrist! The Apple Watch app works independently of the iPhone app, you don't even need your iPhone with you for the app to work. A Complication is included to give you quick access to the last calculated risk value, and to allow one-touch access to the app if you are using it regularly. Please remember that this application is purely an aid, and is not a replacement for clinical judgement.
Cataract Lens
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Experience the pinnacle of precision with Cataract Lens – where state-of-the-art algorithms meticulously analyse patient responses to craft a truly individualised IOL recommendation. Empowering doctors with the ability to fine-tune weightings for specific lens types, this app ensures a tailored approach that aligns with each patient's unique needs. But it doesn't end there – collaboration is key! Doctors can contribute to the algorithm's refinement by submitting their final intraocular lens decisions. This symbiotic relationship between technology and medical expertise guarantees continuous improvement and ultimately results in more accurate and personalised recommendations for every patient. Choose Cataract Lens for a revolutionary way to guide your cataract surgery decisions, backed by cutting-edge algorithms and a collaborative doctor-patient journey. Your vision, your choice, perfected. Disclaimer: Please seek a doctor’s advice in addition to using this app and before making any medical decisions.
Screenshots
Verdict
The clearest difference is price: Cataract Lens at Free against Glaucoma Calc's $2.99. Cataract Lens also leads on update cadence (every 2 months vs every 10 months) and iOS requirement (12.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Cataract Lens is free to download; Glaucoma Calc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Glaucoma Calc ships an update every 10 months, Cataract Lens every 2 months. The most recent releases landed on September 22, 2026 and September 11, 2026 respectively.
| Parameter | Glaucoma Calc | Cataract Lens |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 10 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 46 MB |
| Age rating | 4+ | 12+ |
| Developer | Optical Directions Consulting | Chun-Huei Liu |
In-app purchases
Glaucoma Calc
No in-app purchases
Cataract Lens
No in-app purchases
Questions
Is Glaucoma Calc free?
Is Cataract Lens free?
Do Glaucoma Calc or Cataract Lens have ads?
Which is updated more often, Glaucoma Calc or Cataract Lens?
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