For many couples, undergoing IVF is an emotional and physical journey filled with hope. However, sometimes even after transferring good-quality embryos, implantation fails to occur. One of the hidden factors behind this challenge may be related to the zona pellucida – the outer protective shell of the embryo.
At Karnic Clinic, we offer Laser Assisted Hatching (LAH), a scientifically advanced technique designed to improve the chances of successful implantation, especially for couples who have faced repeated IVF failures or have embryos with a thicker outer shell.

What is Laser Assisted Hatching?
During natural conception, an embryo must “hatch” from its zona pellucida (the protective outer layer surrounding the embryo) before it can attach to the uterine wall and establish a pregnancy.
In some cases, the zona pellucida is unusually thick or hardened, preventing the embryo from hatching and implanting. This is where Assisted Hatching helps.
- In Laser Assisted Hatching (LAH), a highly precise laser beam is used to create a small opening in the zona pellucida.
- This allows the embryo to hatch more easily and attach to the uterus, increasing the likelihood of implantation and pregnancy.
At Karnic Clinic, we use advanced laser technology, which is both safe and effective, minimizing damage to the embryo while maximizing implantation chances.
Why is Laser Assisted Hatching Needed?
Not all patients undergoing IVF need LAH. However, certain groups of couples benefit greatly:
- Women of advanced maternal age (usually over 35 years)
- Couples with repeated IVF or ICSI failures despite good-quality embryos
- Embryos with a thick or hardened zona pellucida (often due to advanced maternal age or laboratory culture conditions)
- Cases of frozen-thawed embryos (freezing can sometimes harden the zona)
- Patients with poor embryo quality or slow-developing embryos
- Women with elevated FSH levels or reduced ovarian reserve
The Procedure: How LAH is Performed
- Embryo Selection – After fertilization, embryos are cultured in the lab until they reach day 3 or day 5 (blastocyst stage).
- Micromanipulation – Under a high-powered microscope, the embryo is carefully held in place using a micromanipulator.
- Laser Application – A specialized laser beam is used to create a tiny hole in the zona pellucida. This process takes just a few seconds and does not harm the embryo.
- Embryo Transfer – The hatched embryos are then transferred into the woman’s uterus for implantation.
The entire procedure is done under the expertise of highly skilled embryologists, ensuring maximum safety and precision.
Benefits of Laser Assisted Hatching
✔Improves Implantation Chances – Helps embryos attach to the uterine lining more effectively.
✔Safe & Precise – Laser is highly controlled, ensuring no damage to the embryo.
✔Higher Success Rates – Especially beneficial in patients with recurrent IVF failure.
✔Better Outcomes with Frozen Embryos – Improves implantation potential after thawing.
✔Personalized Care – Used only when clinically indicated, ensuring maximum benefit.
Success Rates with Laser Assisted Hatching
Several scientific studies have shown that Laser Assisted Hatching can significantly improve implantation and pregnancy rates in certain groups of patients.
- Women above 35 years see improved outcomes.
- Couples with multiple failed IVF cycles often benefit from LAH.
- Use of LAH with frozen embryos has shown better success compared to non-hatched frozen embryos.
While not a guarantee, LAH provides an added advantage in challenging fertility cases.
Why Choose Karnic Clinic for LAH?
At Karnic Clinic, we combine advanced technology with personalized fertility care:
- Latest Laser Technology – Ensuring precision, safety, and improved implantation rates.
- Experienced Embryology Team – Skilled professionals trained in micromanipulation techniques.
- Personalized Treatment – LAH is recommended only for patients who truly need it, avoiding unnecessary interventions.
- Integrated IVF Care – From embryo culture to transfer, every step is carefully monitored.
- Compassionate Support – We guide couples through every stage of their fertility journey, offering both medical and emotional support.
Frequently Asked Questions (FAQs)
Is Laser Assisted Hatching safe for the embryo?
Yes. Laser-assisted techniques are highly precise and cause no harm to the embryo.
Does every IVF patient need LAH?
No. It is recommended only for patients with specific indications such as advanced maternal age, repeated IVF failures, or thick zona pellucida.
Will LAH guarantee pregnancy?
No treatment can guarantee pregnancy, but LAH improves the chances of implantation in selected cases.
Can LAH be used with frozen embryos?
Yes. In fact, LAH is especially beneficial with frozen-thawed embryos, which often have a hardened zona.
Does LAH add extra cost to IVF treatment?
Yes, there may be an additional cost, but it is often considered worthwhile in cases with a history of failed attempts.