Module 2 – Types of IOLs

• Monofocal IOLs

• Multifocal IOLs

• Toric IOLs (astigmatism correction)

• Extended Depth of Focus (EDOF) IOLs

• Accommodating IOLs

• Premium vs. standard IOLs

📘 eLearning Module 2 – Types of Intraocular Lenses (IOLs)

1. Reading Materials (A4 – approx. 1 page)

Types of Intraocular Lenses (IOLs)

Modern cataract and refractive lens surgery offers patients several types of IOLs to suit their lifestyle, vision needs, and eye conditions. Each type has unique advantages and limitations.

1. Monofocal IOLs

• Provide clear vision at one set distance (usually far).

• Patients often still need glasses for near tasks (reading, computer use).

• Standard and widely available.

2. Multifocal IOLs

• Designed with multiple focusing zones or rings.

• Allow vision at near, intermediate, and distance ranges.

• Reduce dependence on glasses, but may cause glare or halos at night.

3. Toric IOLs (Astigmatism Correction)

• Specially designed to correct corneal astigmatism.

• Have different powers in specific meridians.

• Reduce need for glasses in patients with significant astigmatism.

4. Extended Depth of Focus (EDOF) IOLs

• Provide a continuous range of vision from distance to intermediate.

• Fewer halos and glare compared to multifocals.

• Often ideal for patients who spend much time on computers.

5. Accommodating IOLs

• Designed to shift position or change shape inside the eye.

• Mimic natural accommodation for near tasks.

• Still under development, results vary.

6. Premium vs. Standard IOLs

• Standard IOLs: Usually monofocal, covered by insurance or basic care.

• Premium IOLs: Multifocal, toric, EDOF, and accommodating lenses.
  – Cost more but provide greater spectacle independence.
  – Require careful patient selection and counseling.

Key Point: Choosing the right IOL requires balancing visual expectations, lifestyle needs, and cost. Surgeons often recommend different lenses based on whether patients want to minimize glasses use or prioritize night vision quality.

2. YouTube Learning References (2 for Module 2)

1. Types of Intraocular Lenses Explained – Patient Guide

2. Multifocal, Toric & Premium IOLs – Ophthalmology Education

3. FAQs (5) – Dual Language

Q1 (EN): What is the difference between monofocal and multifocal IOLs?

A1 (EN): Monofocal corrects one distance only; multifocal corrects near, intermediate, and far.

Q1 (MM): Monofocal IOL နှင့် Multifocal IOL ကြား ကွာခြားချက်က ဘာလဲ?

A1 (MM): Monofocal သည် အကွာအဝေးတစ်ခုကိုသာ ဖြေရှင်းပေးသော်လည်း Multifocal သည် အနီး၊ အလယ်၊ အဝေးကို တစ်ပြိုင်တည်း မြင်နိုင်စေသည်။

Q2 (EN): Which IOL is recommended for patients with astigmatism?

A2 (EN): Toric IOL.

Q2 (MM): Astigmatism ရှိသော လူနာများအတွက် ဘယ် IOL သုံးသင့်သလဲ?

A2 (MM): Toric IOL ဖြစ်သည်။

Q3 (EN): What advantage does an EDOF IOL provide compared to multifocal?

A3 (EN): It gives smoother continuous vision with fewer halos and glare.

Q3 (MM): EDOF IOL သည် Multifocal နဲ့ နှိုင်းယှဉ်ပါက ဘာအကျိုးကျေးဇူး ရှိသလဲ?

A3 (MM): ပိုမိုချောမွေ့ပြီး ဆက်တိုက် မြင်နိုင်စေပြီး Halo နှင့် Glare နည်းသည်။

Q4 (EN): What is the function of accommodating IOLs?

A4 (EN): They mimic the natural lens movement to focus on near objects.

Q4 (MM): Accommodating IOLs ၏ အလုပ်လုပ်ပုံက ဘာလဲ?

A4 (MM): သဘာဝလက်န် အလားတူ နီးဝေး အလှည့်အပြောင်းကို အတုယူ၍ အနီးအရာများကို အာရုံစိုက်စေသည်။

Q5 (EN): Why are premium IOLs more expensive than standard ones?

A5 (EN): Because they offer advanced designs (multifocal, toric, EDOF, accommodating) for greater spectacle independence.

Q5 (MM): Premium IOLs များသည် Standard IOLs ထက် ဘာကြောင့် ပိုစျေးကြီးသလဲ?

A5 (MM): အနောက်ဆုံးဒီဇိုင်းများ (Multifocal, Toric, EDOF, Accommodating) ပါဝင်ပြီး မျက်မှန်မလိုအပ်စေသည့် အကျိုးကျေးဇူးများ ပိုပေးသောကြောင့် ဖြစ်သည်။

✅ This completes Module 2: Types of IOLs with:

• Reading handout (A4)

• 2 YouTube learning references

• 5 FAQs (EN + MM)

• 10 MCQs (EN + MM)