EyeCalc+: Clinical Ophthalmology Tools

A comprehensive, privacy-first clinical suite designed for ophthalmologists. Access evidence-based calculators, grading scales, and reference guides instantly.

Research Tools

• Video to GIF Converter - Convert clinical videos (up to 30s) to high-quality GIF images for presentations and research.
• NEI VFQ-25 Questionnaire - National Eye Institute Visual Function Questionnaire - 25 (Version 2000). Assesses vision-related quality of life. Optional appendix (VFQ-39) items are presented but not scored.
• Low Luminance Questionnaire - Assesses visual difficulty under various lighting conditions (e.g., low light, glare, night driving).

General Ophthalmology

• General & Rehab AAO PPP - How often to examine an adult with no eye disease or with risk factors, and when to refer for vision rehabilitation, from the AAO Preferred Practice Patterns.
• Cataract & Refractive AAO PPP - Postoperative follow-up, recommended testing and treatment for cataract surgery, contact lens wear and refractive surgery, from the AAO Preferred Practice Patterns.
• Diamox Dosing (CKD) - Acetazolamide (Diamox) dosing guidelines for patients with renal compromise or on dialysis.
• Eyedrop Instructions - Patient-friendly eye drop schedule generator with multi-language support, calendar generation, and voice instructions.
• GCA Prediction Model - Multivariable prediction models for suspected Giant Cell Arteritis (Ing et al. & Laskou et al.).
• IOL Calculator (SRK/T) - Biometry calculation using SRK/T formula with Rule of 9s for sulcus placement.
• Lens Transposition & CL - Convert between plus/minus cylinder formats, calculate spherical equivalents, and determine vertex-corrected contact lens prescriptions.
• Ocular Trauma - Predicts final visual acuity after open globe injury.
• VA Converter - Converts between Snellen, LogMAR, and ETDRS Letter scores.

Cornea

• Cornea AAO PPP - Follow-up interval, recommended testing and treatment for corneal and ocular surface disease, from the AAO Preferred Practice Patterns.
• OSDI Score - Ocular Surface Disease Index: The standard instrument for assessing the severity of dry eye disease symptoms and their impact on vision-related function.
• SICCA Ocular Staining Score - Grading system for ocular surface disease severity using Lissamine Green and Fluorescein staining.

Glaucoma

• Glaucoma AAO PPP - Follow-up interval, recommended testing and treatment for open-angle and angle-closure disease, from the AAO Preferred Practice Patterns.
• GDD in Small Eyes - Freedman-Margeta formula for modifying glaucoma drainage device surgery in pediatric and small eyes.
• OHTS Glaucoma Risk - 5-Year Risk of POAG in patients with Ocular Hypertension based on OHTS/EGPS models.

Neuro-Ophthalmology

• Parks Three Step - Localises the suspected isolated paretic cyclovertical muscle in acquired vertical diplopia.

Pediatrics & Strabismus

• Pediatrics & Strabismus AAO PPP - Follow-up interval, recommended testing and treatment for amblyopia, strabismus and pediatric eye evaluation, from the AAO Preferred Practice Patterns.

Retina

• Retina AAO PPP - Follow-up interval, recommended testing and treatment for each stage of the retinal diseases covered by the AAO Preferred Practice Patterns.
• AMD Classification and Risk - Comprehensive assessment including the Beckman Initiative classification for AMD stages and the AREDS Simplified Severity Scale for progression risk.
• DR & DME Manager - International Clinical Diabetic Retinopathy Disease Severity Scale and AAO Management Guidelines.
• GA 4-yr BCVA Prediction - Decision support for Geographic Atrophy treatment based on BCVA, lesion proximity, and square root-transformed GA area growth rate.
• Plaquenil Retinal Tox - Risk assessment and screening recommendations for Hydroxychloroquine (Plaquenil) retinopathy.
• Injection Guide - Comprehensive guide for intravitreal medications, dosages, and specific injection techniques (Xipere, Ozurdex, Iluvien).
• Injection Interval - Calculator for anti-VEGF injection history, intervals, and next scheduled date.
• MTX Injection Schedule - Schedule for methotrexate intravitreal injection (off-label use) for PVR retinal detachment (GUARD Trial vs. an institutional abbreviated schedule).
• RD One-Liner & Lincoff - Clinical one-liner generator for retinal detachment with interactive Lincoff rules analysis for break localization.
• MacTel 2 (Encelto) - Candidate selection and EZ loss calculator for Encelto implant in Macular Telangiectasia Type 2.
• Macular Hole - IVTS Classification and AAO PPP Management Guidelines.
• Myopic Maculopathy Staging - International Photographic Classification and Grading System for Myopic Maculopathy (ATN classification predecessor).
• Pedigree & Inheritance - Interactive 3-generation family tree generator. Analyzes affected members to suggest likely inheritance patterns (AD, AR, X-Linked, Mito).
• Pediatric Sclerotomy/Injection - Age and disease-based nomogram for sclerotomy or intravitreal injection site placement in pediatric patients.
• PVR Classification - Updated 1991 Retina Society Classification for Proliferative Vitreoretinopathy (Machemer et al).
• Retinal Break Management - Management and follow-up guidelines for PVD, retinal breaks, and lattice degeneration.
• ROP Screening & Follow-Up Planner - Screening eligibility, first examination timing, surveillance intervals, treatment timing, and screening-completion guidance.
• ETROP ROP Classifier - Early Treatment for Retinopathy of Prematurity (ETROP) Treatment Classifier with Zone, Stage, Plus disease, and Aggressive ROP features.

Uveitis/Inflammation

• Uveitis Grading - Standardization of Uveitis Nomenclature for AC cells/flare.
• COTS Ocular TB Risk (Report 2) - Collaborative Ocular Tuberculosis Study (COTS) Report 2 consensus guidelines for initiating antitubercular therapy (ATT) in tubercular anterior uveitis, intermediate uveitis, panuveitis and retinal vasculitis. Choroiditis phenotypes are covered by COTS Report 1 and are not handled here.

Ocular Oncology

• Choroidal Nevus Risk: MOLES and TFSOM-DIM - Assess melanocytic choroidal tumors using the MOLES score and TFSOM-DIM risk factors for transformation into melanoma.